[KERNEL][FireTV Stick 4K] Custom Kernel For AFTV 4k - 6.2.9.4

[BakaValen]

I have no idea why it doesn't work.Check this thread, iirc other people had similar issues and it was discussed (and fixed), so it might help you too.

Also, i don't understand what CIFS module has to do with the USB devices!?

I have had a good look on this thread and can't see any fix. I'll just keep experimenting I guess...

I mentioned CIFS module as it's part of the installs I used from here. Thought it might be a good idea to mention it just in case.

 

[bibikalka]

@Pretoriano80

I installed Apps2SD PRO and noticed that there is zram turned on in the swap section by default. Is it coming from this kernel mod, or the stock kernel?

I added more swap on /cache, will see if it helps.

Also, I may try to move some apps to a USB drive via Apps2SD, and check out how they work.

 

[Pretoriano80]

I don't remember messing up with ZRAM ,so probably the stock kernel has it .

 

[bibikalka]

Did USB speed test, 42 MB/s. Between USB2 & USB3.

1|mantis:/mnt/media_rw/9884-7880/multy # time dd if=test.bin  of=/dev/null bs=67108864
130+1 records in
130+1 records out
8733564826 bytes transferred in 208.181 secs (41951786 bytes/sec)
    3m28.23s real     0m00.02s user     0m19.95s system

 

[Pretoriano80]

OP was updated with 6.2.9.3 boot image.
It's based on 6.2.8.9 kernel source ,which is the latest available from Amazon.
Efuse related stuff was removed from the ramdisk ,so there's no need to "patch" it yourself .

 

[bibikalka]

OP was updated with 6.2.9.3 boot image.
It's based on 6.2.8.9 kernel source ,which is the latest available from Amazon.
Efuse related stuff was removed from the ramdisk ,so there's no need to "patch" it yourself .

About 12 months after I started using this. Your kernel is still the best - exFAT support is amazingly fast (not clunky like via Paragon), I am using my 4k stick as a versatile media player.

 

[dedekwien]

Hi Pretoriano 80
is there any solution for FireTv 4K with OS 6.2.9.4
and is it possible to doing boot from 6.2.9.3?
BR

 

[Pretoriano80]

I wasn't aware that Amazon released another firmware update .
However ,i will try to release a new kernel after switching my FireTV 4k to the new version.

Amazon hasn't released a new kernel source ,so if they changed anything ,then it's impossible for me to know (except for the ramdisk).

 

[Pretoriano80]

Hi Pretoriano 80
is there any solution for FireTv 4K with OS 6.2.9.4
and is it possible to doing boot from 6.2.9.3?
BR

I've attached the 6.2.9.4 custom boot image to OP.
It works fine on my FireTV 4k ,but consider that it's based on latest source available from Amazon ,so only ramdisk was updated to 6.2.9.4 .

 

[fluffi444]

@Pretoriano80
Would you pls let me know if we can use Kernel 6.2.9.4 also on ROM 6.2.8.9?
I ask because there is some usefull stuff available for ROM 6.2.8.9 - especially the SweenWolf Patch...
Looks like that developent stopped for newer ROMS than 6.2.8.9....

Many Thanks.

Plan is to use (would be also the Flashing Order in one TWRP session....)
Stock ROM 6.2.8.9
Your Kernel (to get extFAT/NTFS)
SweenWolf Patch (Patch - 6.2.8.9 (mantis / Firestick 4k) [Final])
Magisk 25.2 (+Modules: AFTV4k_Selinux + NTFS/F2FS/EXT4/exFAT OTG)

 

[Pretoriano80]

There's only one way to find out...but i won't recommend you flashing 6.2.9.4 on older FireOS.

I can't promise you anything ,but i may be able to provide you a 6.2.8.9 custom boot.img,but i won't be able to test it on my FTV4k.

 

[Pretoriano80]

@Pretoriano80
Would you pls let me know if we can use Kernel 6.2.9.4 also on ROM 6.2.8.9?
I ask because there is some usefull stuff available for ROM 6.2.8.9 - especially the SweenWolf Patch...
Looks like that developent stopped for newer ROMS than 6.2.8.9....

Many Thanks.

Plan is to use (would be also the Flashing Order in one TWRP session....)
Stock ROM 6.2.8.9
Your Kernel (to get extFAT/NTFS)
SweenWolf Patch (Patch - 6.2.8.9 (mantis / Firestick 4k) [Final])
Magisk 25.2 (+Modules: AFTV4k_Selinux + NTFS/F2FS/EXT4/exFAT OTG)

I have attached a custom 6.2.8.9 boot.img,please let me know if it works!

OP was also updated with a new 6.2.9.4 release which is now based on latest kernel source available from Amazon (6.2.9.4) .

 

[Pretoriano80]

NOTICE: The new 6.2.9.4 kernel require a TZ update ,otherwise Dolby Vision will not work (there were some DoVi related changes in the latest kernel source ).

I will attach a TWRP flashable version of the 6.2.9.4 TZ image to the OP.

 

[cityhunter_1919_xyz]

NOTICE: The new 6.2.9.4 kernel require a TZ update ,otherwise Dolby Vision will not work (there were some DoVi related changes in the latest kernel source ).

I will attach a TWRP flashable version of the 6.2.9.4 TZ image to the OP.

I am currently using rbox's 6.2.8.1_r3
Is the following procedure correct to use this kernel (6.2.9.4)?
① Change the version of fire OS to 6.2.9.4. (Using TWRP)
https://gist.github.com/JulyIghor/d3d3dd460527a1d2b5b67954160d4abf
・update-kindle-mantis-NS6294_user_4339_0008356164484.bin (change bin to zip)

② Flash custom_boot_mantis_6.2.9.4_R2.zip
③ Flash mantis_tz_update_6.2.9.4.zip
④ Flash any magisk

*Is it possible to go back to the old version (6.2.8.1) again?
(Is it possible to use TWRP again?)

 

[Pretoriano80]

@cityhunter_1919_xyz i never used a pre-rooted rom so i can't guarantee that the procedure will be smooth .

Those steps look fine to me,but after flashing 6.2.9.4 (step 1),you should mount "system" partition ,then use TWRP's File Manager to delete these two files :

/system/bin/efuse_check.sh
/system/bin/ewritter

Then it should be safe to procede with the other steps (my kernel has the efuse stuff removed ,so it's also safe).

As long as you stay unlocked ,it should be possibile to downgrade ,but you might need to downgrade the TZ too ,can't say for sure cause i never tried to downgrade from 6.2.9.4.

 

[cityhunter_1919_xyz]

@cityhunter_1919_xyz i never used a pre-rooted rom so i can't guarantee that the procedure will be smooth .

Those steps look fine to me,but after flashing 6.2.9.4 (step 1),you should mount "system" partition ,then use TWRP's File Manager to delete these two files :

/system/bin/efuse_check.sh
/system/bin/ewritter

Then it should be safe to procede with the other steps (my kernel has the efuse stuff removed ,so it's also safe).

As long as you stay unlocked ,it should be possibile to downgrade ,but you might need to downgrade the TZ too ,can't say for sure cause i never tried to downgrade from 6.2.9.4.

Thank you for your reply.

I was saved because I didn't know how to upgrade from the unlocked state of the OS. (I couldn't try it because I thought TWRP would be gone.)

Since the RAM increased from 1.3GB to 1.8GB on a terminal (6.2.9.4) where TWRP cannot be installed, I wanted to check if the RAM increased by upgrading the unlocked version, so I will try it.

 

[cityhunter_1919_xyz]

Thanks to you, I was able to successfully update to 6.2.9.4.
However, RAM remained at 1.3GB as far as Diskinfo and System Status Monitor show.

The erroneously updated individual (no TWRP) certainly has 0.5GB of RAM, but it is unknown how it increased.

 

[fluffi444]

Those steps look fine to me,but after flashing 6.2.9.4 (step 1),you should mount "system" partition ,then use TWRP's File Manager to delete these two files :

/system/bin/efuse_check.sh
/system/bin/ewritter

Then it should be safe to procede with the other steps (my kernel has the efuse stuff removed ,so it's also safe).

As long as you stay unlocked ,it should be possibile to downgrade ,but you might need to downgrade the TZ too ,can't say for sure cause i never tried to downgrade from 6.2.9.4.

Sry for my late reply - And thanks for the Kernel 6.2.8.9

Perfect! I asked my self the same question (Downgrade from 6.2.8.9 or 6.2.9.4). And I am aware of the efuse stuff.
After reading many topics here I learned much... Thanks to you and the other Pro's here as Sus_i.

Plan is to integrade the "Deleting efuse burner" stuff in one of the flashing scripts in "updater-script" file...
Maybe into your mantis_tz_update_6.2.9.4.zip or in the Kernel.zip - before flashing...

mount("ext4", "EMMC", "/dev/block/platform/soc/11230000.mmc/by-name/system", "/system", "");
ui_print("Deleting efuse burner");
delete("/system/bin/efuse_check.sh",
       "/system/bin/ewriter");
unmount("/system");

Actually I wonder why an TZ update is needed if we flash original bin/zip.
Looks like the TZ.img is also flashed during main software flashing - Or am I wrong?

package_extract_file("images/tz.img", "/dev/block/platform/soc/11230000.mmc/by-name/tee1");
package_extract_file("images/tz.img", "/dev/block/platform/soc/11230000.mmc/by-name/tee2");

EDIT (I think I got it )
Your script flashes TZ to tee1_real

package_extract_file("images/tz.img", "/dev/block/platform/soc/11230000.mmc/by-name/tee1_real");
package_extract_file("images/tz.img", "/dev/block/platform/soc/11230000.mmc/by-name/tee2_real");

 

[co4]

Is it possible to flash this on a new fire stick all I want is a decent launcher with no bloody adverts and Amazon decided to prevent anything from working anymore, accessibility is blocked, all I've managed to do is debloat.

I don't fear attempting soldering or anything but I also don't want to brick my device.

I'm not interested in IPTV stuff and most 'guides' online seem to be aimed at Kodi jailbreaks.