Here's how to recover your Jailbreak if you accidentally did an update.
Short story: I bought a Kindle, I Jaibreak it, I then activated WiFi thinking that the Jailbreak would cut the automatic updates, it was my big mistake!
Amazon upgraded me to 5.16.4 without asking for confirmation. Nothing was working anymore, exept that I still had the "**** JAILBREAK ****" message at startup.
Here's how I got the jailbreak to work again (based on mergen3107 11-22-2023 #484 method)
Download NiLuJe's K5 Jailbreak package
here
Extract emergency-bridge-recovery.zip
edit emergency.sh
At the end of the file you should find those lines:
Code:
# Bye
sync
mntroot ro
Just before those line add this (thank you Marek):
Code:
# Patch version
VER=336034
cp /etc/version.txt /mnt/us/version.txt.backup
sed -i -E "1 s/(-)([0-9]+)$/\1${VER}/g" "/etc/version.txt"
Copy all these files to the root of the Kindle:
Code:
bridge.conf
bridge.sh
emergency.sh
RUNME.sh
Restart. The files will normally have disappeared, and you will have a file /mnt/us/version.txt.backup
Now you can downgrade the firmware to the version that works well for Jailbreak, the Kindle will accept the previous firmware.
One downgraded your system is a little bit messy, you should still have some feature from the last upgrade, so apply a factory reset.
I did it once again to clear out things (upgrade again to the same version, then factory reset)! Not sure this was necessary!
You now have a brand-new system, ready to be Jailbreaked again!