I used the picture as a guide, but I think I was a bit too erratic removing the shielding. The board is in many pieces now, so it won't be booting again, but I will return if we are ever donated another. Best wishesThere's literally a picture of what you need to short to access bootrom mode in the second post.
Based on what you said (especially the burning smell part), it sounds like you shorted VBAT/VBUS with ground. Worst case scenario, you may have killed the entire motherboard, or if you were lucky, maybe you just killed the battery.
Maybe the tab is still alive. Try to check if it still shows up under lsusb when you plug it in.
Just run it again. It may complain about broken RPMB, just press enter.Hello! I have the Fire HD giza and the tablet got bricked after step 1. I had succeeded in running bootrom-step.sh once and used TWRP and tried to install LineageOS, however I encountered an error, but that's not relevant at the moment. I restarted and had varying degrees of success with bootrom-step.sh, what had worked for me was holding BOTH volume buttons with the battery disconnected and running bootrom-step.sh. My mistake was I ran gpt-fix.sh and as the script was running the cable got unplugged and now the screen is completely blank. Not even the blank screen with the amazon logo comes on under any circumstance, can you please advise?
It's not moving past 'Waiting for bootrom', i've tried pressing both volume buttons as I plug into script as well as shorting the pin as I plug in, all with the battery disconnected. Is it possible I deleted the bootrom / preloader somehow?
sudo apt update sudo add-apt-repository universe sudo apt install python3 python3-serial adb fastboot dos2unix
sudo systemctl stop ModemManager sudo systemctl disable ModemManager
sudo fastboot flash recovery bin/recovery.img
Bus 002 Device 013: ID 0e8d:0003 MediaTek Inc. MT6227 phone
Bus 002 Device 014: ID 0e8d:2000 MediaTek Inc. MT65xx Preloader
[ 6383.962057] usb 2-2: New USB device found, idVendor=0e8d, idProduct=0003, bcdDevice= 1.0
Unplugging the battery and running bootrom-step-minimal.sh works. Thanks.If you really bricked the tablet with step-1.sh and you can't get bootrom-step.sh to work, try to connect the tablet with the battery unplugged (then after the script finishes, reconnect it). Alternatively, if that doesn't work, try pressing the volume - button while plugging it in.
At some point Amazon built in an anti-rollback mechanism to prevent downgrading the firmware directly through side-loading.Hi there!
Firstly, thanks for this!
Problem: I've flashed the old update bin through sideload successfully. However, when I try to boot the bootrom, it doesn't. Lsusb doesn't register the device at all, and dmesg sees it as preloaded with error -22. What are your suggestions as to what I have done wrong, and what should I do to remedy it? Thanks