Download Wiko Rainbow Jam 4G official firmware from the link here, and follow the provided flashing instructions to learn how to flash the stock rom. If you notice that any of the links provided below is broken or doesn’t work, please post in comments section so we fix and update it ASAP. Download Options File Name: RAINBOW_JAM 4G_V12.zip Size: 793 MB Firmware – Download How to flash Click here to view complete flashing instructions for any of the firmware package downloaded below. If you have any issue with flashing, post in comments section below for assistance.
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