Download Stock ROM for Infinix X521S (X521)
Below you will find the official & unofficial Stock Firmware for the Infinix X521S. You can use this ROM to flash your device using compatible tools.
Stock Firmware for X521
- Firmware Version: X521S-J5088B1-M-KESF-161223V11_()
- ROM Type: Service ROM
Stock Firmware for X521
- Firmware Version: X521S_MT6753_V11_161223_()
- ROM Type: Service ROM
Stock Firmware for X521
- Firmware Version: X521_MT6735_V140_161223
- ROM Type: Service ROM
Stock Firmware for X521
- Firmware Version: X521_MT6735_6.0_J5088A1_M_161223V140
- ROM Type: Service ROM
How to Install Stock ROM on Your Infinix X521S
follow the Instructions below to Install Stock Firmware on your transsion device.- Download and unzip Transsion Flash Tool
- Download & Install all In One usb driver from this page
- Open Transsion Flash Tool
- Click the Settings icon, browse and select the ROM you downloaded
- new version support Qualcomm, unisoc and Mediatek devices so no need to select platform manually
- Click Green \'Start\' button
- Switch off your device, keep pressing volume up + down button at same time and connect the usb cable
- Wait until the process complete
- once done, reboot your device..
