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| Error Message | Solution | | :--- | :--- | | | Reinstall VCOM drivers. Try a different USB port (USB 2.0 preferred). | | S_BROM_DOWNLOAD_DA_FAIL | The firmware link you used is for a different chipset. Find a different Firmware ZTE Blade A55 link . | | PMT changed for the ROM | In SP Flash Tool, go to Options > General > Tick “Download without checksum”. | | Phone still boot loops after flash | You need to select “Format All + Download”, but note this requires backing up NVRAM (IMEI). |
You can find the SD card software (e.g., version MyOS14.0.3_Z2450_EEA ) and user manuals on the official ZTE Devices Support Page .
| Error Message | Solution | | :--- | :--- | | | Reinstall VCOM drivers. Try a different USB port (USB 2.0 preferred). | | S_BROM_DOWNLOAD_DA_FAIL | The firmware link you used is for a different chipset. Find a different Firmware ZTE Blade A55 link . | | PMT changed for the ROM | In SP Flash Tool, go to Options > General > Tick “Download without checksum”. | | Phone still boot loops after flash | You need to select “Format All + Download”, but note this requires backing up NVRAM (IMEI). |
You can find the SD card software (e.g., version MyOS14.0.3_Z2450_EEA ) and user manuals on the official ZTE Devices Support Page .