So, just to be clear 0xBF gives you reboot loop? And what about 0xAE? The backup registry attached is different from the screenshot you provided:
device-id here is 0xEF not 0xAE.
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MP All Models AMD Radeon RX 6800 XT / 6900 XT for macOS?
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device-id here is 0xEF not 0xAE.
0xAE give me normal boot but very slow display and no acceleration
0xBF give me reloop boot
The backup registry you show is yours
I tried now to change the SSDT
Still sleepingThe backup registry you show is yours
. Ok, so the SSDT worked, but it does not like so much 0xAE and 0xBF does not let it boot. How about removing the device-id from the SSDT? You need to find a device-id match which will load the driver. Try this SSDTI try now with SSDT without device-id...Still sleepingdevice-idmatch which will load the driver. Try this SSDT
Next i try the last one
Sorry, but no one make success 😢
This is IO Registry when booting with the last SSDT you send to me
Try this one.
- Under NVRAM -> Add -> 7C436110-AB2A-4BBB-A880-FE41995C9F82 -> boot-args, append the boot arg agdpmod=pikera -radcodec
- -radcodec: Used for allowing officially unsupported AMD GPUs (spoofed) to use the Hardware Video Encoder
- Save the file
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Good morning Startergo,
I do all the change but always no results...sorry
Please find attached :
- Last config.plist used
- Last IO Registry backup
- 4 screen captures
@olixsm it is weird, but the same part number comes with 2 different vBioses:
73BF is the supported vBios and 73AF is the unsupported one. Essentially it is a modded vBios and theoretically the 73BF vBios should work for your card. The biggest differences are the top end of the memory frequency, some thermal limits and the memory clock. You can try flashing this vBios (obviously after applying the fixROM):
Your vBios is here:
73BF is the supported vBios and 73AF is the unsupported one. Essentially it is a modded vBios and theoretically the 73BF vBios should work for your card. The biggest differences are the top end of the memory frequency, some thermal limits and the memory clock. You can try flashing this vBios (obviously after applying the fixROM):
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[SOLVED] Where i can find informations on the picture ? what software to use ?@olixsm it is weird, but the same part number comes with 2 different vBioses:
View attachment 2193114
73BF is the supported vBios and 73AF is the unsupported one. Essentially it is a modded vBios and theoretically the 73BF vBios should work for your card. The biggest differences are the top end of the memory frequency, some thermal limits and the memory clock. You can try flashing this vBios (obviously after applying the fixROM):
Your vBios is here:
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You may be able to, but you have to de-solder the chip. The in-curcuit flashers are expensive.
You can try, but you will probably power up a lot in that circuit and there is not enough juice on that line.
The cheapest way is probably to get a cheap PC from your local recycling store. You can also get a hot air station to desolder and solder back the chip like this one
https://www.amazon.com/PROSTORMER-temperature-Efficiency-212-932°F-Electronics/dp/B08VNYPL7H/ref=mp_s_a_1_4?crid=2NZARYP2RTUKC&keywords=soldering+heat+gun&qid=1682506724&sprefix=soldering+heat+gun%2Caps%2C338&sr=8-4
I recently purchased a cMP5,1 with a motherboard, CPU tray old video card and a power supply all for 35 bucks. Before I went to the recycling store I called and asked if they had an empty case. The guy said he will sell me one for 35. 15 minutes later I was in the store and he only managed to take out the RAM and the HDD. He did not bother with the rest. But there are dirt cheap PC’s and Macs in those stores.
No it doesn't, just any PC with Windows (where you have admin access) and an available PCIe slot. Syncretic's flash takes less than 5 mins, and once it's done, (assuming you already had Pixlas mod done and have the right changes done to your OC config file) you simply throw the GPU into the cMP and voila.
Hmm, doen't it have to be at least UEFI and not legacy bios?
If you have access to the chip (meaning you went trough the mess of removing this monster of a carbon glued cooler of the 6800/6900/xt), also a USB-hardware programmer like the well known and cheap CH341A will do. The chip does not have to be desoldered to get it programmed!
For me it is easier to desolder the chip than remove the cooler and the rest of the circuit.
Hmm, how do you get your hands on the chip of a AMD 6xxx series card for desoldering it without removing the cooler?