A custom firmware was made by netizens for the Sony A7C II, directly unlocking FL2/FL3 and Fujifilm X-series filters

User 'QAQLeonard' has created a custom firmware for the Sony A7C II, unlocking FL2 and FL3 film modes, supporting import of external LUTs, Fujifilm NC, Ricoh GR direct color tones and creative appearances, electronic shutter sound, and vertical display, etc. A7C II Tools has released version 3.0, the first version with a formal graphical interface.