Walton Primo C3 3G Firmware, Flash Tool, Driver & Upgrade Instruction Walton Primo C3 3G Firmware, Flash Tool, Driver & Upgrade Instruction 10 November Bijendra Narsinghani Share To: Primo C3 3G Driver, Flashtool & Firmware download Link: Download Here C3_3G_4.4.2_1 Primo C3 (3G) Firmware upgrade instruction: Open flashtool Select scatter file Click Firmware upgrade 4. Press and hold volume down key till the progress start 5. Connect USB cable 6. Connect Battery 7. Wait till download complete.
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