This happens if you flashed a firmware version meant for a different country variant that does not support your local network's frequency bands, or if the IMEI/NVRAM data was wiped.

Even with the correct firmware, you may still encounter issues. Here are some typical problems and solutions.

Open the flashing utility (e.g., SWDownloader.exe or Sales_MultiDL.exe ).

| Firmware File | Size | Notes | |---|---|---| | 388800B0431BD_MF920UV1.0.0B02.zip | 42.8 MB | — | | 370220B0306BD_CNCNLMF920UV1.0.0B03.zip | 40.9 MB | — | | 392130B0474BD_MF920UV1.0.0B04.zip | 41.1 MB | — | | PV_ZTE_CNCNLMF920U5V1.0.0B02.zip | 225 MB | — | | 377360B947EN_ZTE_CNCNLMF920U5V1.0.0B09.zip | 228 MB | — | | 394500B1098EN_ZTE_CNCNLMF920U5V1.0.0B10.zip | 40.9 MB | — | | 394940B0639BD_MF920UV1.0.0B06.zip | 41.2 MB | Marked as a specific carrier version |