Polytron Zap 5 4G450 By Jogja Cell (Free)

ROM Mobile POLYTRON 4G450 -  ROM Android 4.4
Official ROM POLYTRON 4G450 latest version  : POLYTRON_4G450_V4 – full_bd6737m_35g_b_m0-eng 4.4
Gapps include – No Rooted
Language support : Multilang
Support 4G LTE Smartften card 
Install ROM:
- QPST Tool and Drivers should be installed properly
- Make sure your device is charged to at least 50%
- run QFIL (Qualcomm Flash Image Loader) Tool
- clik on Browse... Under select programmer to choose the .MBN File
- as soon as the .mbn file is selected, select build will automatically load the update or stock rom
- click on Load XML, select rawprogram_unsparse_without_qcn.xml and then choose Patch0.xml
- switch off the device and connect it to PC while pressing Volume Up + Down + Power buttons
- click on Select Port and choose the port
- click on Download to start flashing
- once finish download appears, disconnect your device from the PC
Note: do not unplug cable when Reset phone or waiting for reset phone in the procces
You just successfully flashed the firmware to your device using QPST

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