: Enable USB Debugging and dial *#0808# to select ADB + MTP .
: Fixing a persistent "Unknown Baseband" may require disassembling the device to access Test Points on the back of the motherboard to force the device into a specific repair mode. A326B U4 Repair IMEI Solution Firmware
To utilize this firmware effectively, follow these common industry steps: : Enable USB Debugging and dial *#0808# to select ADB + MTP
: Use the Odin Tool to flash the U4 binary firmware. Initial boot can take 5–10 minutes. A326B U4 Repair IMEI Solution Firmware
