To further confirm @bibikalkas color-theory, is your device a different color than black or plumb? (Since it's neither 1J nor 2C, but 2D)
@k4y0z @INetBowser @StonedEngineer97 @Michajin @samdotci @Kramar111
I was thinking, would deep discharge of the battery do the same thing as battery removal for the purpose of accessing BootRom? At first, let it drain normally, then go into fastboot, and leave it there so it drains some more, and does not boot. Anyway, just a thought to avoid opening up the devices ...
For data collection purposes, I looked into getting more specific info on the hardware. The bulk of it is stored in /prod/idme. Here are the commands:
adb shell cd /proc/idme for f in board_id manufacturing device_type_id productid productid2 serial; do echo $f; cat $f; echo ""; done
Here is my output (X is obfuscation). If you have several devices, and some of these IDs are the same on more than 1, please don't obfuscate those. I cannot tell what is unique from a single device, and thus probably obfuscated a bit too much.
board_id 003F00140001XXXX manufacturing PSN=P001P30303XXXXXX FSN=5919835XXXXXX device_type_id A1ZB65LA39XXXX productid 0 productid2 1241FFFFFFFFFFFFFFFF serial G0011J060344XXXX
Could you all post yours? Hopefully we can figure out BootRom accessibility a bit more accurately.
Most of these (besides serial and possibly PSN, FSN) shouldn't be device-specific.