Fire TV Stick 4K (mantis) Prerooted Stock Images [6.2.8.1_r3]

[Ighor]

It needs to things to burn the efuse:
-updated TZ image (at least 6.2.8.1)
-stock efuse burner inside the rom

I think exactly this should be in the red text.

TWRP prevents the TZ update, but 6.2.8.1r2 got a workarround in the update script, so the TZ gets updated...
If you now flash a stock rom, with always enabled efuse-burner inside, your efuse is gone.

Yes, I know, just downgraded to r2 from OFW, it fixed TZ, and upgraded to OFW back. Apps that depends on DRM started to work again. I guess until next TZ update released.

 

[Sus_i]

just downgraded to r2 from OFW, it fixed TZ, and upgraded to OFW back.

If you haven't deleted the efuse script out of OFW, then the efuse got burned just at rebooting.
Isn't a big issue, since we can use now the bootrom-step via preloader without shorting.

 

[Ighor]

efuse got burned just at rebooting.
Isn't a big issue

I not removed TWRP, just flashed OFW
Isn't TWRP preventing burning efuse?

 

[SweenWolf]

I not removed TWRP, just flashed OFW
Isn't TWRP preventing burning efuse?

If someone has a stock rom with efuse burner with magisk installed, and then uninstalls it (which will flash the boot.img removing TWRP)
One reboot will blow your efuse, which will be called by the boot.img itself.

 

[Sus_i]

I not removed TWRP, just flashed OFW
Isn't TWRP preventing burning efuse?

No, TWRP prevents only flashing images like TZ, LK or PL.

You see, the 6.2.8.1r2 from rbox flashs the updated TZ in order to fix DRM, but this updated TZ got also the efuse-burn instructions in there...

If you flash a stock rom above 6.2.8.0 after flashing this TZ update, nothing will prevent the efuse from burning, it will blow during the next boot. Thats why rbox noted 'never flash a stock rom'

Only way to prevent the burning (with the updated TZ installed) is to flash only prerooted roms from rbox, since he removes the efuse script in his roms...

Afaik @SweenWolf did the same with his stockrom patches, which may an alternative to the prerooted, isn't it?

 

[pixelview]

Hi there !
I have only TWRP (no root) and 6281 stock on my fire 4k stick. How to return to stock boot loader, without burning anything ?

 

[Sus_i]

Hi there !
I have only TWRP (no root) and 6281 stock on my fire 4k stick. How to return to stock boot loader, without burning anything ?

If you mean the efuse-burning, then there isn't a way back to stock, cuz stock burns it by default.

 

[pixelview]

If you mean the efuse-burning, then there isn't a way back to stock, cuz stock burns it by default.

Thank you for reply, but i mean - is there way , to get the stick "like a new", i don't need a TWRP .

 

[Sus_i]

Thank you for reply, but i mean - is there way , to get the stick "like a new", i don't need a TWRP .

You would need to:
-install a clean stock rom with twrp,
-wipe data/factory reset with twrp,
-reboot into hacked fastboot,
-grab the boot.img out of the rom you've flashed in the first step and flash it with the fastboot flash command to boot.
-At the next reboot twrp gets replaced with the stock recovery and your stick is full stock.
-Done

 

[teephart]

I have na OTA Update available, can i install it on

6.2.8.1_r3?​

 

[Sus_i]

I have na OTA Update available, can i install it on

6.2.8.1_r3?​

If you have a newer stick with 'burned efuse', yes.
If you have an older stick and if you want to keep the efuse safe, then no, otherwise it will break the shorting method.