The HTC Aria at least could also cold boot from USB power. The first method developed for bootloader unlocking on it required an SD card with the unlocking software be inserted at a particular time during the boot process. And the SD card slot was under the battery!

Edit: now I have to double check myself; signing back into some old posts maybe I’m not remembering the process correctly. It was maybe 16 years ago, and I’m getting old! :-)

was working fine when I installed yesterday. Just updated to the most recent testflight beta, and my existing accounts have disappeared, with no apparent way to re-add. Suspect this is an issue with the newest release. Presumably will be resolved in next release.

Edit: have submitted an error report on testflight. Reverting to the previous build in testflight brings back the ‘+’ button to add accounts. Previously added accounts were deleted when the most recent update was installed, and reverting does not bring them back automatically.