Ensure the files were extracted from the .zip file properly. Re-download the firmware.
Ensure the USB is formatted to FAT32 . Try a different, smaller USB drive.
| Issue | Likely Fix | |--------|-------------| | USB not recognized | Reformat FAT32; try a smaller USB (2GB–8GB); use USB 2.0 not 3.0 | | “Update file not found” | Files must be in root (not in a folder) | | Update stops at 0% or fails | Bad download – re-download; or model mismatch – check file name | | Stereo turns off during update | Keep ignition on (connect battery charger if needed) | | No update available for my model | Many budget Blaupunkt units are not updateable. The firmware on them is final | | Stuck on boot logo after update | Perform factory reset via pinhole button; or contact support for recovery image |