Non-updating-iPad Pro, unresponsive 2016 MBP (tried SMC reset no joy)

[AthenaNoctua]

So, here's today's saga:

I have an older (2017) iPad Pro (wifi + cell). Now, we all know that the last few iterations of iPadOS have been very tricky and refuse to install over wifi. However, the last 3 updates (from 15.1), I've not been able to install via Finder or iMazing, either. I realise that the wifi update issue has something to do with cellular, but there's no SIM in it (and I can't remove it from its case to remove the tray)

The Finder error is Fig. 1 (which is incredibly helpful, I'm sure you'll agree). The iMazing error is Fig. 2. There's a bit more info on the iMazing error, but I don't know if any of it's pertinent, or peculiar to iMazing.

So then I had an idea; I'd dig out my old 2016 MBP and try with that. It's dead, Jim. Even though the cable and charger are absolutely fine, and work with my 2020 iPad Pro, the MBP persistently shows the 'please connect to power' symbol, when connected to the same charger (65W) with the same cable. Resetting the SMC didn't work, as presumably the battery's so completely FUBAR'd that it won't. Iv'e tried 4 known working cables and 3 known working chargers. Is there any magic I can perform to resurrect it...? It only has 2 working USB-C ports (cables fall out of the two on the left).

There's kind of a part 2 to this, which is the reason I'm trying to update - games and apps with ambient/background sound, no longer have sound. Soundcloud and Spotify are fine, as are YouTube and social media. The device doesn't even vibrate (as it would if it was playing sound but was muted). They're just.......silent.

I can't think it's a hardware issue as, surely, that would mean I'd not hear anything at all from any app...?

This machine's an M1 Max MBP /64GB/4TB, macOS 12.3.

Thanks folks!

AN

 

[AthenaNoctua]

Well, I managed to resurrect the 2016 MBP, but I receive similar errors on that. I've now ordered a new C to Lightning cable out of sheer desperation because, unless anyone has any brilliant ideas, I can't think what else it could be. The Finder, on the 2016, will download the update, and extract it (which is further than it got on the M1) and then give me the 4000 error after "preparing iPad for update" for a couple of minutes or so.

It's going to be stuck on 15.0.1 forever, isn't it...? ???

 

[TiggrToo]

Now, we all know that the last few iterations of iPadOS have been very tricky and refuse to install over wifi.

I've never installed iPadOS any other way than via WiFi.

So no, "we all" don't have your problem. In fact I'd hasten to say that there's a large number of iPad owning folk who do not even own a MacBook and still update just fine.

Making sweeping generalities based upon personal experience is not a good way to ask for help.