Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Status
The first post of this thread is a WikiPost and can be edited by anyone with the appropiate permissions. Your edits will be public.
The nVidia GT-120 which Apple shipped for the cMP is going for between USD$15 to $30 on eBay - cheap way to get through the firmware upgrades. Also a low-power choice if you're going to turn your cMP into a server.
Just my opinion but I would get a bootrom reconstruction from @tsialex - clean, modern, up to date bootrom that you can reflash every three months or so to protect against a brick. Not much more than the cheap GPU cost and a lot less hassle with future protection built in.

And yes I am a very happy @tsialex customer.
 
It was a card from microcenter I bought with my sister in law a couple years ago. Just a sapphire pulse 8gb.

It's not a EFI GPU from factory or a GPU that have any native pre-boot configuration support from factory, maybe it's OpenCore boot picker and not the Apple native boot picker that you are seeing.
 
Yes, you need a BootROM reconstruction service to solve the NVRAM corruption.

I'll send you a PM.
Hello there !@tsialex Could you PM for the reconstruction service ? I recently bought a 4.1 flashed to 5.1 (dual cpu, 96gb of ram, sapphire 580), and I ran the test with UEFI Tool... before using opencore i dumped the rom files (showing 34000 free space, without any signs of corruption), and after installing Monterey via Martin Lo package, I have 3000 free space, and many lines filled with "Invalid"... I could dump the back up rom I have but since it's a flashed 4.1 to 5.1, I would appreciate a fresh ROM.
Thanks in advance,
Jordan
 
Hello there !@tsialex Could you PM for the reconstruction service ? I recently bought a 4.1 flashed to 5.1 (dual cpu, 96gb of ram, sapphire 580), and I ran the test with UEFI Tool... before using opencore i dumped the rom files (showing 34000 free space, without any signs of corruption), and after installing Monterey via Martin Lo package, I have 3000 free space, and many lines filled with "Invalid"...

Invalid should be read as Superseded, so, you will always have some entries marked as Invalid.

The real issue is, if you still have a lot of Invalid entries right after a NVRAM reset, it's a sign that garbage collection stopped working, extremely common with cross-flashed early-2009 Mac Pros.

I could dump the back up rom I have but since it's a flashed 4.1 to 5.1, I would appreciate a fresh ROM.
Thanks in advance,
Jordan

Sure.
 
hello, @tsialex
time has come for me to ask you for your reconstruction service. Cross flashed for long time now 4,1>5,1.
Do you have time? would you PM me your info?
I appreciate you and your support.
Thank you.
 
  • Like
Reactions: tsialex
Hi @tsialex
Joining the club... I would like to ask about your ROM service too, 4,1>5,1 and trying to get OCLP and Monterey up and running, to get a few more years out of the old beast, but it sounds like having a decent ROM to fall back on is a good idea. Would you be able to PM details please?
Thanks
J
 
  • Like
Reactions: tsialex
New to the forum here. I had an interesting problem and found this thread. I have a Mac pro 4,1 flashed to 5,1 with Mojave and Martin Lo's opencore and a windows 11 install. I tried to install Monterey on an nvme/pcie a couple times and was failing, ending up with weird boot issues. I then had other issues as well, such as diag lights for cpu overheat that I discovered. The boot chime had disappeared and the computer had gone into a reboot cycle that I couldn't see without a flashed gpu. I ended up pulling everything (hard drives, peripherals) from the computer except the opencore Mojave drive and putting the original gpu back in. It was still not booting properly. Something I saw somewhere made me change the motherboard button battery at this point. It was definitely original as before I started working with the Mac pro it had not been used since 2016. It then started, chimed, and no OC boot picker but I had the standard option screen. I got into the OC Mojave install and blessed and oc boot picker returned. I decided to check the rom after finding this thread and it showed no free space entry, just padding, but it had the second vss store. I thought it was effed. I did a 3x nvram reset now that I could bring something up and went back and did a rom dump again and it showed 36k free with 3 16gb dimms installed. Am I in the clear? I've checked it several times since and it's stayed in the mid 30k range. I think a dead button battery really messed me up for a bit.
 
I have a Mac pro 4,1 flashed to 5,1

This is your real problem.

While a spent RTC battery for sure can make the Mac Pro go crazy, the cross-flashing is the main issue. The MacPro4,1 NVRAM volume is different than a real MacPro5,1 (just one working VSS store) and overtime it will corrupt and then you’ll have a brick. Besides that there are the hardware descriptor, hacked BootBlock and etc.

There is no other solution besides a BootROM reconstruction service. I’ll send you a PM.
 
This is your real problem.

While a spent RTC battery for sure can make the Mac Pro go crazy, the cross-flashing is the main issue. The MacPro4,1 NVRAM volume is different than a real MacPro5,1 (just one working VSS store) and overtime it will corrupt and then you’ll have a brick. Besides that there are the hardware descriptor, hacked BootBlock and etc.

There is no other solution besides a BootROM reconstruction service. I’ll send you a PM.
Alright much appreciated. I will watch for your message.
 
  • Like
Reactions: tsialex
Hi, i got a mpro 4.1 to 5.1 .
64 gb ram in 4 slot
single cpu
radeon rx570

I have issues like long time boot or unable to get full nvram reset: only 1 chime

I want update to mojave and after use open core but i think it better a nvram reconstrution.
It's safe to update now to 144 before rom dump?
Can you help me @tsialex ?
Thank you!
 
Last edited:
  • Like
Reactions: tsialex
Quick question here, does injecting GPU drivers in the bootrom with enableGop /XEinject has side effects on the stability/longevity of a 4,1 cmp bootrom running Monterey (OCLP) ? I imagined the new drivers would take some space on the bootrom but maybe I am wrong.
 
Quick question here, does injecting GPU drivers in the bootrom with enableGop /XEinject has side effects on the stability/longevity of a 4,1 cmp bootrom running Monterey (OCLP) ? I imagined the new drivers would take some space on the bootrom but maybe I am wrong.

It´s a little more complex than you are thinking.

The MacPro5,1 BootROM have lots of avaliable space. The issue is that the BootROM is composed of different components and when you inject a driver, it´s injected inside the EFI part of the BootROM. The problems with space are inside the NVRAM volume, a tiny 192KB volume inside the 4096KB BootROM.

The problem with a cross-flashed early-2009 is that the MP4,1 NVRAM have a very different design than the the MP5,1 one - only one VSS store and with a FTW functional store while the MP5,1 one have two VSS stores and just a non-functional placeholder for the FTW - and over time the NVRAM volume of the cross-flashed early-2009 corrupts itself. The only way to avoid it is with a BootROM reconstruction.

So, while injecting EnableGop won´t take space, the issues with the NVRAM volume are real and will brick your early-2009 Mac Pro.
 
  • Like
Reactions: JedNZ
It´s a little more complex than you are thinking.

The MacPro5,1 BootROM have lots of avaliable space. The issue is that the BootROM is composed of different components and when you inject a driver, it´s injected inside the EFI part of the BootROM. The problems with space are inside the NVRAM volume, a tiny 192KB volume inside the 4096KB BootROM.

The problem with a cross-flashed early-2009 is that the MP4,1 NVRAM have a very different design than the the MP5,1 one - only one VSS store and with a FTW functional store while the MP5,1 one have two VSS stores and just a non-functional placeholder for the FTW - and over time the NVRAM volume of the cross-flashed early-2009 corrupts itself. The only way to avoid it is with a BootROM reconstruction.

So, while injecting EnableGop won´t take space, the issues with the NVRAM volume are real and will brick your early-2009 Mac Pro.
You reconstructed my rom a year ago and I regularly flash my cmp with it :) this time I have injected enableGop on the dump you provided me and try that instead !
 
  • Like
Reactions: tsialex and 0134168
I just ran the ROMTOOL and dumped my ROM, I followed the instructions and picked the first VSS, I could not find Free Space as my last listing. Is this a problem?
 
I just ran the ROMTOOL and dumped my ROM, I followed the instructions and picked the first VSS, I could not find Free Space as my last listing. Is this a problem?

Never upload your BootROM image dump publicly. It's unique to your Mac Pro (shouldn't be used with another one) and have lot's of personal info.

Edit your post and remove it. I'll take a look.
 
  • Like
Reactions: 0134168
I just ran the ROMTOOL and dumped my ROM, I followed the instructions and picked the first VSS, I could not find Free Space as my last listing. Is this a problem?

You installed Windows UEFI without the OpenCore SecureBoot protection, so, your BootROM image was signed two times:

Code:
DECIMAL       HEXADECIMAL     DESCRIPTION
--------------------------------------------------------------------------------
0             0x0             UEFI PI Firmware Volume, volume size: 524288, header size: 1, revision: 0, EFI Firmware File System, GUID: 7A9354D9-0468-444A-CE81-0BF617D890DF
24972         0x618C          CRC32 polynomial table, little endian
35787         0x8BCB          mcrypt 2.2 encrypted data, algorithm: blowfish-448, mode: CBC, keymode: 8bit
243907        0x3B8C3         BIOS version: MP51.88Z.F000.B00.1904121248
524288        0x80000         UEFI PI Firmware Volume, volume size: 524288, header size: 1, revision: 0, EFI Firmware File System, GUID: 7A9354D9-0468-444A-CE81-0BF617D890DF
549260        0x8618C         CRC32 polynomial table, little endian
560075        0x88BCB         mcrypt 2.2 encrypted data, algorithm: blowfish-448, mode: CBC, keymode: 8bit
768195        0xBB8C3         BIOS version: MP51.88Z.F000.B00.1904121248
1048576       0x100000        UEFI PI Firmware Volume, volume size: 16384, header size: 1, revision: 0, EFI Firmware File System, GUID: 7A9354D9-0468-444A-CE81-0BF617D890DF
1064960       0x104000        UEFI PI Firmware Volume, volume size: 49152, header size: 1, revision: 0, GUID: 153D2197-29BD-44DC-59AC-887F70E41A6B
1065216       0x104100        Intel x86 or x64 microcode, sig 0x000106a5, pf_mask 0x03, 2018-05-11, rev 0x001d, size 12288
1077504       0x107100        Intel x86 or x64 microcode, sig 0x000206c0, pf_mask 0x13, 2009-08-20, rev 0x-ffea, size 8192
1085696       0x109100        Intel x86 or x64 microcode, sig 0x000206c2, pf_mask 0x03, 2018-05-08, rev 0x001f, size 11264
1114112       0x110000        UEFI PI Firmware Volume, volume size: 16384, header size: 1, revision: 0, EFI Firmware File System, GUID: 7A9354D9-0468-444A-CE81-0BF617D890DF
1130496       0x114000        UEFI PI Firmware Volume, volume size: 49152, header size: 1, revision: 0, GUID: 153D2197-29BD-44DC-59AC-887F70E41A6B
1130752       0x114100        Intel x86 or x64 microcode, sig 0x000106a5, pf_mask 0x03, 2018-05-11, rev 0x001d, size 12288
1143040       0x117100        Intel x86 or x64 microcode, sig 0x000206c0, pf_mask 0x13, 2009-08-20, rev 0x-ffea, size 8192
1151232       0x119100        Intel x86 or x64 microcode, sig 0x000206c2, pf_mask 0x03, 2018-05-08, rev 0x001f, size 11264
1179648       0x120000        UEFI PI Firmware Volume, volume size: 196608, header size: 1, revision: 0, Variable Storage, GUID: FFF12B8D-7696-4C8B-85A9-2747075B4F50
1179688       0x120028        NVRAM start of the 1st VSS store
1179766       0x120076        NVRAM MemoryConfig type: (j)
1185763       0x1217E3        NVRAM BluetoothUHEDevices
1191818       0x122F8A        NVRAM bluetoothActiveControllerInfo
1193079       0x123477        Certificate in DER format (x509 v3), header length: 4, sequence length: 986
1195144       0x123C88        NVRAM MemoryConfig type: (i)
1197712       0x124690        NVRAM MemoryConfig type: (g)
1199760       0x124E90        NVRAM MemoryConfig type: (h)
1201808       0x125690        NVRAM MemoryConfig type: (i)
1204379       0x12609B        NVRAM MemoryConfig type: (g)
1206427       0x12689B        NVRAM MemoryConfig type: (h)
1208475       0x12709B        NVRAM MemoryConfig type: (i)
1245255       0x130047        NVRAM start of the 2nd VSS store
1245302       0x130076        NVRAM MemoryConfig type: (j)
1251299       0x1317E3        NVRAM BluetoothUHEDevices
1257354       0x132F8A        NVRAM bluetoothActiveControllerInfo
1258615       0x133477        Certificate in DER format (x509 v3), header length: 4, sequence length: 986
1260680       0x133C88        NVRAM MemoryConfig type: (i)
1263248       0x134690        NVRAM MemoryConfig type: (g)
1343511       0x148017        bzip2 compressed data, block size = 100k
1345181       0x14869D        HardwareID Base_xx: 21
1345190       0x1486A6        HardwareID 11-digits SSN: H01xxxxGWR
1345207       0x1486B7        HardwareID 3-digit HWC model: GWR
1376256       0x150000        UEFI PI Firmware Volume, volume size: 2686976, header size: 1, revision: 0, EFI Firmware File System, GUID: 7A9354D9-0468-444A-CE81-0BF617D890DF
1416827       0x159E7B        BIOS version: MP51.88Z.F000.B00.1904121248
1614976       0x18A480        Apple NVMe EFI Module
4063232       0x3E0000        UEFI PI Firmware Volume, volume size: 65536, header size: 1, revision: 0, GUID: E3B980A9-5FE3-48E5-929B-2798385A9027
4128768       0x3F0000        UEFI PI Firmware Volume, volume size: 65536, header size: 0, revision: 0, Apple Boot Volume, GUID: 04ADEEAD-61FF-4D31-BAB6-64F8BF901F5A
4128867       0x3F0063        BootBlock version: AAPLEFI1.88Z.0005.I00.1010071430
4194000       0x3FFED0        HardwareID MLB/LBSN: J51xxxxxxBH9A, BuildDate: 1111xx1111xxx

HardwareIDs edited to not leak serial numbers.

Unfortunately, you gonna need a BootROM reconstruction service to repair the mess caused by Windows UEFI Secureboot. I'll send you a PM.
 
  • Like
Reactions: 0134168
You installed Windows UEFI without the OpenCore SecureBoot protection, so, your BootROM image was signed two times:

Code:
DECIMAL       HEXADECIMAL     DESCRIPTION
--------------------------------------------------------------------------------
0             0x0             UEFI PI Firmware Volume, volume size: 524288, header size: 1, revision: 0, EFI Firmware File System, GUID: 7A9354D9-0468-444A-CE81-0BF617D890DF
24972         0x618C          CRC32 polynomial table, little endian
35787         0x8BCB          mcrypt 2.2 encrypted data, algorithm: blowfish-448, mode: CBC, keymode: 8bit
243907        0x3B8C3         BIOS version: MP51.88Z.F000.B00.1904121248
524288        0x80000         UEFI PI Firmware Volume, volume size: 524288, header size: 1, revision: 0, EFI Firmware File System, GUID: 7A9354D9-0468-444A-CE81-0BF617D890DF
549260        0x8618C         CRC32 polynomial table, little endian
560075        0x88BCB         mcrypt 2.2 encrypted data, algorithm: blowfish-448, mode: CBC, keymode: 8bit
768195        0xBB8C3         BIOS version: MP51.88Z.F000.B00.1904121248
1048576       0x100000        UEFI PI Firmware Volume, volume size: 16384, header size: 1, revision: 0, EFI Firmware File System, GUID: 7A9354D9-0468-444A-CE81-0BF617D890DF
1064960       0x104000        UEFI PI Firmware Volume, volume size: 49152, header size: 1, revision: 0, GUID: 153D2197-29BD-44DC-59AC-887F70E41A6B
1065216       0x104100        Intel x86 or x64 microcode, sig 0x000106a5, pf_mask 0x03, 2018-05-11, rev 0x001d, size 12288
1077504       0x107100        Intel x86 or x64 microcode, sig 0x000206c0, pf_mask 0x13, 2009-08-20, rev 0x-ffea, size 8192
1085696       0x109100        Intel x86 or x64 microcode, sig 0x000206c2, pf_mask 0x03, 2018-05-08, rev 0x001f, size 11264
1114112       0x110000        UEFI PI Firmware Volume, volume size: 16384, header size: 1, revision: 0, EFI Firmware File System, GUID: 7A9354D9-0468-444A-CE81-0BF617D890DF
1130496       0x114000        UEFI PI Firmware Volume, volume size: 49152, header size: 1, revision: 0, GUID: 153D2197-29BD-44DC-59AC-887F70E41A6B
1130752       0x114100        Intel x86 or x64 microcode, sig 0x000106a5, pf_mask 0x03, 2018-05-11, rev 0x001d, size 12288
1143040       0x117100        Intel x86 or x64 microcode, sig 0x000206c0, pf_mask 0x13, 2009-08-20, rev 0x-ffea, size 8192
1151232       0x119100        Intel x86 or x64 microcode, sig 0x000206c2, pf_mask 0x03, 2018-05-08, rev 0x001f, size 11264
1179648       0x120000        UEFI PI Firmware Volume, volume size: 196608, header size: 1, revision: 0, Variable Storage, GUID: FFF12B8D-7696-4C8B-85A9-2747075B4F50
1179688       0x120028        NVRAM start of the 1st VSS store
1179766       0x120076        NVRAM MemoryConfig type: (j)
1185763       0x1217E3        NVRAM BluetoothUHEDevices
1191818       0x122F8A        NVRAM bluetoothActiveControllerInfo
1193079       0x123477        Certificate in DER format (x509 v3), header length: 4, sequence length: 986
1195144       0x123C88        NVRAM MemoryConfig type: (i)
1197712       0x124690        NVRAM MemoryConfig type: (g)
1199760       0x124E90        NVRAM MemoryConfig type: (h)
1201808       0x125690        NVRAM MemoryConfig type: (i)
1204379       0x12609B        NVRAM MemoryConfig type: (g)
1206427       0x12689B        NVRAM MemoryConfig type: (h)
1208475       0x12709B        NVRAM MemoryConfig type: (i)
1245255       0x130047        NVRAM start of the 2nd VSS store
1245302       0x130076        NVRAM MemoryConfig type: (j)
1251299       0x1317E3        NVRAM BluetoothUHEDevices
1257354       0x132F8A        NVRAM bluetoothActiveControllerInfo
1258615       0x133477        Certificate in DER format (x509 v3), header length: 4, sequence length: 986
1260680       0x133C88        NVRAM MemoryConfig type: (i)
1263248       0x134690        NVRAM MemoryConfig type: (g)
1343511       0x148017        bzip2 compressed data, block size = 100k
1345181       0x14869D        HardwareID Base_xx: 21
1345190       0x1486A6        HardwareID 11-digits SSN: H01xxxxGWR
1345207       0x1486B7        HardwareID 3-digit HWC model: GWR
1376256       0x150000        UEFI PI Firmware Volume, volume size: 2686976, header size: 1, revision: 0, EFI Firmware File System, GUID: 7A9354D9-0468-444A-CE81-0BF617D890DF
1416827       0x159E7B        BIOS version: MP51.88Z.F000.B00.1904121248
1614976       0x18A480        Apple NVMe EFI Module
4063232       0x3E0000        UEFI PI Firmware Volume, volume size: 65536, header size: 1, revision: 0, GUID: E3B980A9-5FE3-48E5-929B-2798385A9027
4128768       0x3F0000        UEFI PI Firmware Volume, volume size: 65536, header size: 0, revision: 0, Apple Boot Volume, GUID: 04ADEEAD-61FF-4D31-BAB6-64F8BF901F5A
4128867       0x3F0063        BootBlock version: AAPLEFI1.88Z.0005.I00.1010071430
4194000       0x3FFED0        HardwareID MLB/LBSN: J51xxxxxxBH9A, BuildDate: 1111xx1111xxx

HardwareIDs edited to not leak serial numbers.

Unfortunately, you gonna need a BootROM reconstruction service to repair the mess caused by Windows UEFI Secureboot. I'll send you a PM.
Common error. Fortunately, you can fix this.
 
Hello,

I have recently gotten to updating a 4,1-->5,1 (dual CPU w/ 8 populated DIMMs) with OC and unfortunately did not stumble on the issues that can come with flashing and running newer OSs when it comes to the BootROM. I did a dump before a 5x NVRAM reset and after. Both were missing the second VSS Store. The first dump had a first VSS Store with 9698 of free space and the second dump had a first VSS Store with 10402 of free space. I assume this means that the BootROM has some level of corruption and a not fully functioning trash collection?
 
Hello,

I have recently gotten to updating a 4,1-->5,1 (dual CPU w/ 8 populated DIMMs) with OC and unfortunately did not stumble on the issues that can come with flashing and running newer OSs when it comes to the BootROM. I did a dump before a 5x NVRAM reset and after. Both were missing the second VSS Store. The first dump had a first VSS Store with 9698 of free space and the second dump had a first VSS Store with 10402 of free space. I assume this means that the BootROM has some level of corruption and a not fully functioning trash collection?

Correct, once the secondary VSS store header is corrupt and not being identified by UEFITool anymore, deep NVRAM resets are not capable of repairing the NVRAM volume and a BootROM reconstruction service is required. I’ll send you a PM.
 
@tsialex

I have two crossflashed 4.1 to 5,1 flashed 2009 Mac Pro’s.
I hope you can help me with a rom reconstruction for these.. ?

Can I send you a dm ?
 
  • Like
Reactions: tsialex
Some two or three weeks ago, after doing a Mojave clean install to one of my Mac Pros, I've noticed by accident that the About This Mac screen wasn't showing the Mac Pro year model anymore, like when you don't have internet access (it's a remote query based on the SSN after all).

Initially I thought that was a just fluke, but several re-installs later with different Mac Pros - this one is from today - and no more year models:

Screen Shot 2023-10-11 at 20.04.20.png


Apple is on a warpath against classic Mac Pros… 😉
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.