Flashing firmware can permanently damage ("brick") your device if done incorrectly. Prepare these essentials before starting: Required Tools
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Browse and select the prog_emmc_firehose_xxxx.mbn file from your downloaded firmware folder. backup your configuration settings (APN
Write down your current IMEI, MAC address, and working APN settings. Step-by-Step Guide to Flashing 4G Ufi Dongle Firmware 4g Ufi Dongle Firmware
If possible, backup your configuration settings (APN, Wi-Fi password) before updating. Troubleshooting Firmware Issues