Tone13 wrote:
Needed to reset my iMac Pro.
I tried internet recovery, it connected to my network and after about 15 minutes failed.
There was no way of exiting after the error message so I force shutdown.
What was the error message?
Now, I very time I turn on the machine it asks me to select a network or if I have it connected to Ethernet it just starts internet recovery on its own and always fails.
How does it fail? Does it give the same error as you mentioned previously when I assume you were booting into Internet Recovery Mode over WiFi?
FYI, most issues with Internet Recovery Mode are due to issues with the network. Since you have tried using an Ethernet cable you can try power cycling the router & waiting at least 5 minutes to allow it to finish booting before trying again. I'm assuming you are connecting the Ethernet cable directly to the router. Unfortunately, your ISP or even local Internet could be part of the problem with both outside of your control.
If I shut down the Mac, it’s starts back up on its own and goes straight into internet recovery mode.
if I hold down Option+Command+p+r it still goes straight into recovery mode with no way to exit and again always fails.
Use Command + Option + R in order to attempt access to the online installer for the most recent version of macOS available for this Mac. Of course using the key combination you mentioned is fine for testing whether you can even boot to any of the online installers, but you may have trouble actually installing the older version of macOS since Apple doesn't seem interested in fixing them. There is a simple fix discovered by the community if you even get that far.
Any suggestions on what I can try next. A search online doesn’t really suggest much more than what I’ve already tried.
You can try a DFU Firmware Revive which resets the T2 security chip & system firmware. This should not affect any data stored on the internal SSD assuming the process completes successfully. All bets are off if the process does not complete successfully.
Unfortunately the DFU Firmware Revive requires access to another Mac currently running macOS 26.x Tahoe, or possibly macOS 15.x Sequoia (not sure if the latter will still work).
You can also try accessing Internet Recovery Mode at another physical location in case there is a network issue at your house, or ISP which is interfering with Internet Recovery Mode.
Did you by any chance modify the system security settings to allow booting from USB? If so, then creating & using a bootable macOS USB installer would be an option, however, if you never modified the system security settings to allow booting from USB then this is not an option now since it requires booting into Recovery Mode to configure the setting.
