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Bootloader update failing

Posted: 13 Apr 2026, 02:22
by Eric Beam
Hello,
I picked up a 2nd OG Midronome on the used market. Using the "Upgrade Midronome Bootloader Step 1.exe" updater, it stops and displays "5" when trying to update to the "upgrade-bootloader-v99.9.midr" bootloader. It looks like the original owner never updated this box, so I need to update the bootloader before I can update to the current firmware.
Same result on 2 different computers. I'm a bit stuck at this point.

Re: Bootloader update failing

Posted: 13 Apr 2026, 02:49
by Eric Beam
Well 3rd computer did the trick. I have a suspicion it might be related to the new Windows MIDI updates that are in the works. I keep the 3rd system offline and compared the usb device drivers after the successful bootloader update.

3rd system driver.
{76BDA2E5-6D56-41E7-AE73-3EB191FC62D7}.png


Main system driver
{82EF0C0E-DD75-4ECC-82AD-DB52A2C259A0}.png