Firmware Comparison¶

Wairz can compare firmware versions to identify changes between releases — useful for patch analysis, understanding what a vendor fixed or modified.

Filesystem Diff¶

Compare two firmware versions' filesystems to see:

Added files — New files in the newer version
Removed files — Files deleted in the newer version
Modified files — Files with changed content (compared by hash)
Permission changes — Files with changed permissions

Binary Diff¶

Compare a specific binary between two firmware versions at the function level:

Added functions — New functions in the newer version
Removed functions — Functions deleted in the newer version
Modified functions — Functions with size changes

Decompilation Diff¶

Side-by-side decompilation comparison — decompile the same function from two firmware versions and produce a unified diff. Shows exactly what changed in the pseudo-C code.

This is the most detailed comparison level, useful for understanding precisely what a vendor patched.

Usage¶

Upload multiple firmware versions to the same project
Use list_firmware_versions to see available versions and their IDs
Run comparison tools with the firmware IDs

MCP Tools¶

Tool	Description
`list_firmware_versions`	List uploaded firmware versions
`diff_firmware`	Compare filesystem trees
`diff_binary`	Compare binary functions
`diff_decompilation`	Side-by-side decompilation diff