What changes
Dataset 720B of module 5F (MIB3): all zh_CN slots → ru_RU, CRC32 recalculated. Navigation, voice prompts and SMS in Russian.
Details
The purpose of the three 720B slots is not established exactly (navigation, TTS, voice control, message reading). The Asian firmware may have no Russian resources for them — then some labels stay English. Apply after 720C. The same map as on the A3 8Y. For a Chinese-built Q3 F3 with MIB3 (MHI3_AS_AU firmware, e.g. P3611): owners have done exactly this — several confirmations on 2022–2023 Q3s; on a Japanese Q3 (P3801) the whole interface became Russian. If the dataset has no slot with that code (European or US firmware), Odyx refuses before writing. Module 5F is SFD-protected — a token is required; model year 2025–2026 cars (P4318) have SFD2, and a 'driving prohibited' fault was reported after russification — do not apply there. The MMI restarts after writing; archived faults may appear in modules 17 and 75. Rollback: write the original dataset from the backup.