A tool such as Balong USB Loader or Huawei Firmware Flasher.
Watch the progress bar. The router lights will flash sequentially. Once the lights turn solid green or the tool indicates success, click . Step 5: Reset the Router Disconnect the USB cable and power source. Reassemble the router casing. Insert your new carrier SIM card. huawei b311-221 unlock firmware
: Use AT commands through a terminal emulator (like Putty) to restore your original IMEI number found on the device sticker. Legality and Safety Warning A tool such as Balong USB Loader or Huawei Firmware Flasher
The unlocking process may vary depending on the device's firmware version and the unlock code. Here's a general outline: huawei b311-221 unlock firmware
Load the payload bootloader file (usually named usbloader.bin for the B311 chip architecture).