Download and Install Stock ROM On Polaroid PSPTB20NA [Official Firmware]: The Polaroid PSPTB20NA is powered by a Spreadtrum CPU. The firmware is for Spreadtrum SC7731e versions. The firmware is around 743 MB so we recommend having a stable wifi while downloading the firmware. This ROM can be flashed using SPD Flash Tool. The Official stock firmware name is PSPTB20NA_MX_V0.1_20180810.zip. The […]
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