[BOOTLOADER] 2nd-Bootloader/Recovery unlock process for KFire 2 [TWRP 2.6.3.0]

soupmagnet · Mar 28, 2013

flopower1996 said:
Is it not possible to downgrade to an earlier version via fastboot?

See above, and now below...

Hashcode said:
We might still be able to re-flash the 2nd-bootloader from 10.2.4 where this hole exists, but this is unconfirmed as of yet.

If you are on the 10.3.0 software you will NOT be able to use the OP's instructions for applying the 2nd-bootloader fix. Hold off until we figure out of re-flashing the 10.2.4 bootloader works.

flopower1996 · Mar 28, 2013

AW: [BOOTLOADER] 2nd-Bootloader/Recovery unlock process for Kindle Fire 2

Haha thanks.

Gesendet von meinem LG-P990 mit Tapatalk 2

Hashcode · Mar 29, 2013

Instructions for flashing your bootloader back to the 10.2.4 binary (this worked for the KFireHD 8.9 -- thanks to soupmagnet for testing):

Link to the 10.2.4 u-boot (bootloader) file for the Kindle Fire 2 here:
http://goo.im/devs/Hashcode/otter2/otter2-u-boot-prod-10.2.4.bin
md5sum 5b03a7b428325de8d360ec201a745498
(You SHOULD check this before using fastboot -- downloads CAN be corrupted)

And this is flashed via fastboot with:

Code:

fastboot -i 0x1949 flash bootloader otter2-u-boot-prod-10.2.4.bin

flopower1996 · Mar 29, 2013

Hashcode can you port the newest version of twrp to our device?
That would be great.

aarons510 · Mar 31, 2013

Hashcode said:
Instructions for flashing your bootloader back to the 10.2.4 binary (this worked for the KFireHD 8.9 -- thanks to soupmagnet for testing):

Link to the 10.2.4 u-boot (bootloader) file for the Kindle Fire 2 here:
http://goo.im/devs/Hashcode/otter2/otter2-u-boot-prod-10.2.4.bin
md5sum 5b03a7b428325de8d360ec201a745498
(You SHOULD check this before using fastboot -- downloads CAN be corrupted)

And this is flashed via fastboot with:

Code:

fastboot -i 0x1949 flash bootloader otter2-u-boot-prod-10.2.4.bin

I did this and it seemed to work, judging from the Terminal responses (which I unfortunately seem to have failed to save). But how can I verify that it has, and that the 10.2.4 bootloader is installed? (The System version still shows as 10.3.0_user_xxxxxxx, which I presume does not contradict the bootloader version being 10.2.4)

And in this situation, is it safe to just try to flash (with fastboot) an appropriate TWRP image to see if that works?

Hashcode · Mar 31, 2013

Re: [BOOTLOADER] 2nd-Bootloader/Recovery unlock process for Kindle Fire 2

yep, there is really no way to confirm bootloader version after flashing.

Sent from my DROID RAZR HD using Tapatalk 2

abreeden · Apr 2, 2013

Assuming if you are already running CM10.1 nightlies you have nothing to fear from this 3/27 Amazon update? i dont see how, but i want to be sure before i have a couple of family members drop their bricked KF2's in my lap.

peoro · Apr 2, 2013

alanthemanofchicago said:
Not sure if anyone's noticed this but if you don't have a fastboot cable, just run

Code:

adb push boot.img /mnt/sdcard adb push twrp.img /mnt/sdcard adb shell su #dd if=/mnt/sdcard/boot.img of=/dev/block/platform/omap/omap_hsmmc.1/by-name/boot #dd if=/mnt/sdcard/twrp.img of=/dev/block/platform/omap/omap_hsmmc.1/by-name/recovery

from a running OS. It seemed to do the job for me.

So, if I do like this, I'm gonna flash a 100% working bootloader?

A few days ago I tried to flash a bootloader this way, but I totally bricked the device and had to send it to warranty. (I believe it's because I flashed a bootloader for Kindle Fire 1 though).

Hashcode · Apr 3, 2013

Re: [BOOTLOADER] 2nd-Bootloader/Recovery unlock process for Kindle Fire 2

The only time you should flash the bootloader partition directly would be to downgrade to an older version of the stock signed bootloader.

Other than that, we dont touch the stock bootloader.

Sent from my DROID RAZR HD using Tapatalk 2

mpr90 · Apr 3, 2013

I didn't see anything in this thread about which software version this procedure does work with (other than that it doesn't work with 10.3.0). Does anyone know if works with 10.1.1 (which I have on my KF2)?

Hashcode · Apr 3, 2013

I works on any of the previous versions of the OS.

Hashcode · Apr 3, 2013

OP is updated:

1. Includes the option of downgrading the stock bootloader to 10.2.4 incase you're on version 10.3.0 where the security hole we use to load custom kernel/ROMs has been fixed. (Step 3.5)
2. Recovery links are updated for TWRP 2.4.4.0 built for the Kindle Fire 2 (loaded via the 2nd-bootloader).

Enjoy.

seokhun · Apr 3, 2013

Hashcode, the link to the xda thread with the 1-click method isn't working. Thanks!

tready · Apr 3, 2013

thanks hashcode iv just gone from 10.30 stock to the latest cm nightly great work mate

flopower1996 · Apr 3, 2013

thanks for porting the newest version harsh!

Hashcode · Apr 3, 2013

seokhun said:
Hashcode, the link to the xda thread with the 1-click method isn't working. Thanks!

Looks like FMKilo's thread link is working (for me), but I noticed XDA had squashed my link to the Official CM10.1 thread. FIXED.

ab30494 · Apr 13, 2013

is the fast boot cable, the one that came with the kindle. or do i need to buy a special cable

mindmajick · Apr 13, 2013

ab30494 said:
is the fast boot cable, the one that came with the kindle. or do i need to buy a special cable

Read more

http://xdaforums.com/showthread.php?t=2228539

Sent from my SGH-I727 using Tapatalk 2

s10010001 · Apr 18, 2013

Hashcode said:
Instructions for flashing your bootloader back to the 10.2.4 binary (this worked for the KFireHD 8.9 -- thanks to soupmagnet for testing):

Link to the 10.2.4 u-boot (bootloader) file for the Kindle Fire 2 here:
http://goo.im/devs/Hashcode/otter2/otter2-u-boot-prod-10.2.4.bin
md5sum 5b03a7b428325de8d360ec201a745498
(You SHOULD check this before using fastboot -- downloads CAN be corrupted)

And this is flashed via fastboot with:

Code:

fastboot -i 0x1949 flash bootloader otter2-u-boot-prod-10.2.4.bin

can I get a little help with the downgrade. I have a stock KF2 with root. But is on 10.3! I tried to downgrade with that command (I just used the fastboot.exe in the droidSDK right?) But it just says waiting for device. Is that because im not using a fastboot cable?

Xperia Player · Apr 19, 2013

C:\Documents and Settings\Nick>adb push stack /data/local/tmp/ 4 KB/s (4096 bytes in 1.000s) C:\Documents and Settings\Nick>adb shell su -c "dd if=/data/local/tmp/stack of=dev/block/platform/omap/omap_hsmmc.1/by-name/system bs=6519488 seek=1" 0+1 records in 0+1 records out 4096 bytes transferred in 0.002 secs (2048000 bytes/sec) C:\Documents and Settings\Nick>adb shell su -c "reboot bootloader" C:\Documents and Settings\Nick>fastboot -i 0x1949 flash bootloader otter2-u-boo-prod-10.2.4.bin target reported max download size of 486539264 bytes error: cannot load 'otter2-u-boot-prod-10.2.4.bin': Unknown error C:\Documents and Settings\Nick>fastboot -i 0x1949 flash bootloader otter2-u-boo-prod-10.2.4.bin target reported max download size of 486539264 bytes error: cannot load 'otter2-u-boot-prod-10.2.4.bin': Unknown error C:\Documents and Settings\Nick>fastboot -i 0x1949 getvar product < waiting for device >

Can anyone tell me what I'm doing wrong?

[BOOTLOADER] 2nd-Bootloader/Recovery unlock process for KFire 2 [TWRP 2.6.3.0]

Retired Forum Moderator

Senior Member

Senior Recognized Developer

Senior Member

Senior Member

Senior Recognized Developer

Senior Member

Senior Member

Senior Recognized Developer

Member

Senior Recognized Developer

Senior Recognized Developer

Senior Member

Senior Member

Senior Member

Senior Recognized Developer

Senior Member

Account currently disabled

Senior Member

Senior Member

Similar threads

Top Liked Posts