KVS: Kernel Version Switcher, made to easily switch the tpm_kernver on Chromebooks.
- Target Chromebook must be unenrolled, and FWMP must also be disabled
- External storage to flash shim (preferrably a USB)
- The ability to build a shim (prebuilt shims are hosted here
- Clone the repo:
git clone https://github.com/kxtzownsu/KVS.git
cd KVS/builder/
- Make sure you have the following dependicies installed:
gdisk e2fsprogs
- Run the builder:
sudo bash builder.sh <path to RAW shim> <optional flags>
After flashing KVS to a RAW shim, download & open the Chromebook Recovery Utility.
Press the Settings (⚙️) icon in the top right, and press "Use Local Image". Select your built KVS shim, and then select your USB/SD.
After it is done flashing, go to your target Chromebook and go to the recovery screen (ESCREFRESHPOWER). Press CTRLD, then ENTER to boot into devmode. Then plug in the KVS drive and press ESCREFRESHPOWER to boot the shim.
(for ultra-skidiots)
Once KVS has fully booted, you should see this:
KVS: Kernel Version Switcher v1
Current kernver: <your kernver>
TPM Version: 2.0
TPMD: trunksd
-=-=-=-=-=-=-=-=-=-=-
1) Set New kernver
2) Backup kernver
3) Bash shell
4) Credits
5) Exit
>
You're probably here just to switch your kernver, so type 1. You should see: Please Enter Target kernver (0-4) or Please Enter Target kernver (0-3). Enter the kernver you want, then click ENTER. If it works, great! If not, you probably neglected to read the sixth line in this README.