Walton Primo NF Firmware, Flash Tool, Driver & Upgrade Instruction Walton Primo NF Firmware, Flash Tool, Driver & Upgrade Instruction 10 December Bijendra Narsinghani Share To: Primo NF Android 4.4.2 Firmware, Flash tools & Drivers Download Link: Download Here NF_4.4.2_1 Process: 2.Open Flash Tool 2. Open scatter_loading and select SW---> MP_mt72_z18cl_n25w_niao_jb3_wcdma_mul_tphone_20140 428-161722_lichunlin_PC) MT6572_Android_scatter_emmc_txt 4. Click Start all, press volume up+down button together and connect USB with Handset 5.When it shows Download ok in green, the installation is completed.
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