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Proper drivers (like the SPD U2SD COM port driver) must be installed so the PC can communicate with the phone's chipset. unisoc imei repair tool
Ultimately, any discussion of IMEI repair must begin and end with the same principle: The free tools (Maui Meta, Modem Meta) are
Restoring Connectivity: A Guide to Unisoc (SPD) IMEI Repair Tools The free tools (Maui Meta