Based on current technical resources, here is how you can locate and identify the correct firmware: Firmware Identification
| Command | Description | |---------|--------------| | spflasher --list | Detect devices in bootloader mode | | spflasher --read backup.bin | Dump current flash (backup) | | spflasher --write <file>.bin | Flash a new firmware image | | spflasher --verify <file>.bin | Verify flash contents against the binary | | spflasher --erase | Full chip erase (use with care) | | spflasher --reset | Soft reset after flashing | | UART console > fwconfig save | Persist runtime config changes | | UART console > diag run all | Run built‑in diagnostics | sp7731e 1h10 native firmware link
Secondly, the flashing process itself is precarious. The SP7731E requires the correct USB drivers and a specific version of the SPD Research Tool. If the wrong "PAC" file (the firmware package format for Spreadtrum) is loaded, the device can suffer from "NV Item" corruption. This results in the loss of the IMEI number (the phone's unique identity), rendering the device unable to make calls or use mobile data. Restoring the IMEI on Spreadtrum devices is a complex Based on current technical resources, here is how