🚀 Always keep a copy of your QCN file in cloud storage. It is the single most important file for hardware-level recovery on any OnePlus device. If you need help with this process, let me know: Which OxygenOS version are you on? Do you have Root access ? Is your IMEI showing as "Unknown" in settings?
: To even interact with these files, users must enter Engineer Mode (often via code *#800# or *#888# ) to enable the DIAG port , allowing a PC to read or write the QCN data. Popular Tools Mentioned in Reports OnePlus 7 Pro imei repair oneplus 7t pro qcn file
QCN is only part of the modem partition. A safer backup is via TWRP: 🚀 Always keep a copy of your QCN file in cloud storage