A prod keys and firmware mismatch happens when prod.keys is older than the installed firmware. Lichii installs the firmware but cannot decrypt it, so games crash, freeze on boot or report missing system files.
How do you read both versions?
- Firmware: the version you installed last, or the version named on the ZIP you used.
- Keys: the highest
master_key_XXline in prod.keys shows the newest key generation the file holds.
Which one must be newer?
The keys must be the same release as the firmware or newer. Newer keys with older firmware work; older keys with newer firmware do not.
How do you fix the mismatch?
- Download Switch 2 prod.keys v22.5.0.
- Install them with Tools > Install Decryption Keys.
- Reinstall firmware 22.5.0 (or the firmware matching your keys) with Tools > Install Firmware.
- Restart Lichii.
Why does the install order matter?
Lichii decrypts firmware at install time with the keys it has loaded. Installing firmware before the matching keys stores titles it cannot open; reinstalling after the keys fixes that.
Version references
This page is part of prod keys and firmware for Lichii, where every prod keys and firmware version for Lichii is listed with its download link. Related guides are collected under Lichii key and firmware fixes.