Here are trustworthy sources:
After booting, check your network connection. To verify your IMEI numbers, dial *#06# on your phone. If your IMEI numbers are missing or corrupted, you can restore them using the "MobileUncle Tools" app if you had created a backup earlier. If you didn't create a backup, you can manually write your IMEI numbers (which are printed on the box or under the battery) using engineering mode or specific apps designed for MTK devices. Official Wiko Rainbow 3G Stock Rom For SP-Flashtool
Resolves instances where the device is stuck permanently on the Wiko boot logo. Here are trustworthy sources: After booting, check your
Hold (or Volume Up) and connect it to your PC via USB . If you didn't create a backup, you can
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: Your PC cannot communicate with the device. Try changing your USB cable, switching to a USB 2.0 port instead of a USB 3.0 port, or re-installing the MTK VCOM drivers.
: Extract the Stock ROM zip and the SP Flash Tool on your PC. Open Tool : Run flash_tool.exe as an Administrator . Load Scatter : Click the "Choose" button next to Scatter-loading File .