[Fire TV Q&A, Help & Troubleshooting] Matt_7:
Hi Daniel, thanks for taking the time to write.

Yes my bootloader is fully unlocked, and my unit is rooted with TWRP installed.

Hi Sus_i, where are you at? If you can try the "hardware (low voltage emmc adapter, a special sdcard reader, small soldering iron)" thing on my FireTV, I will compensate you for your time and ship the unit to you (I'm near the border, so US/CAN addresses are fine with me).

Ok, this is what happened in my case:

My FireTV 1 background - bought directly from Amazon, rooted back in 2015/2016, bootloader fully unlocked and TWRP installed in 2017.

1) Was running on rbox's pre-rooted 5.2.6.3_r1

2) Updated to rbox's 5.2.7.2_r1 and discovered that upon resuming/waking up from sleep the unit always return to the Home page instead of whatever page/Tab you left it as in 5.2.6.3_r1, also Alexa and few other APPS were automatically installed in 5.2.7.2_r1.

I only use 4 APPS on my FireTV, an APK from my IPTV (90 %), VLC to watch videos from my own local Network (5%), CX_File Explorer to move/transfer files (3%) and NewPipe (alternative to YouTube) (2%).

rbox’s pre-rooted 5.2.6.3_r1 is perfect for my needs above, as I NEVER need to see the Amazon Home screen or any ads. Only the 1st time after a power off/on that I would ever see the Home page and from there on I would navigate to the “Settings” Tab – “Applications” Tab – “Manage Applications” and I only see a few pre-installed APPS from Amazon and my 4 APPS above and going to sleep mode and waking up sleep mode always stays in the “Manage Applications” Tab and NOT Amazon Home page as in 5.2.7.2_r1.

3) Flashing back from 5.2.7.2_r1 to 5.2.6.3_r1/5.2.7.0_r1/5.2.6.9_r1 to no avail because I would always get an error stating Login ID/password combinations were in errors (Login ID/password were 100% dead correct), also the Developer Options would also no longer showing under My Device/My FireTV Tab. Amazon FireTV support would be quick to add the FireTV under my profile (because they could see I bought it directly from them back in 2014 and they also could see my serial numbers and all along I was the only one registered for this unit), but still no go, so I tried to de-register/re-register again during all the testing and Amazon must had added the FireTV to my profile at least 10 times and in the end it escalated to the point they credited my account $25.00 (this is usually the price of the FireTV Stick 4K during sales/promotions) and also at the same time sent out a FireTV Stick 4K to me FOC.

I’m not a FireTV expert, but just an ordinary user with some sys/programming backgrounds during my early years. I reckon Amazon must had implemented some sort of hard coded checks either on their side (registration) or in the firmware since 5.2.6.3_r1.

4) So now my unit is flashed with 5.2.6.3_r1 and couldn’t get passed the registration screen, what do I do? I re-flash it to 5.2.7.2_r1 and bingo, everything is back to normal again and don’t even need to register the unit. (For testing purposes, I removed my A/C from the unit and re-register again and this time Login ID/password got no errors).

5) Thinking that back from Windows 98SE/2000/XP Pro/W7 Pro and now Windows 10 Pro, no matter what kind of messed I created, I would just format the drive/write zeros and re-image (Ghost image Back-ups) and everything would be normal again. My fireTV is rooted, bootloader is fully unlocked and TWRP installed, I told myself what’s there to afraid of , so I tried to re-flash 5.2.7.2_r1 to 5.2.6.3_r1/5.2.7.0_r1 and it would always back to the registration error and now double icons under settings, lol.

6) I suspect during one of the re-flash I made a mistake of after clearing/wipe Cache/Dalvik, instead of the default reboot, I ESC back out and redo the install/re-flash thinking that might get rids of all the leftovers that cause the double icons under Settings.

7) Now I’m left with the white Amazon logo on my TV screen and white pulsing light on the unit itself. I like to think that the motherboard or the power unit are still alive, just that the software part of it got messed up by ME big time!