I haven't had time to update Mamba for 4.92. In theory Mamba 4.91 should work on 4.92.
However, it could have issues with PS2 and PSP games that depend on certain hardcoded hashes and offsets in explore_category_game, explore_plugin, PEmuCoreLib, etc.
You can confirm it, disabling Cobra in Evilnat 4.92 and loading IRISMAN. If Mamba is loaded and the ISOs are mounted correctly then it's safe to use the current Boot Mamba pkg. Otherwise, you'll have to wait until I or someone else have the time to update it.