@hcch
You won't achieve anything at all by downgrading the firmware. All versions from 2.80 to current 5.30 have strong MSV protection so you must patch the firmware, use the latest V5.30 for that. As there is also GVS protection, the patched firmware must be loaded as an RGN file in pre-boot mode using Updater.exe but only for initial patching. Subsequent patched versions can be done by a GCD file ongoing. Read this thread: [Only registered and activated users can see links. ]. I also gave you that thread's link several days ago over here: [Only registered and activated users can see links. ]. There is (currently at least) no other way to use unlocked maps on your DriveLuxe. Post in the Patcher thread if you need more help, but read the first several posts at least before posting there. Pay particular attention to Note 3 in Post No. 2 should RGN_Tool fail to flash the RGN file.