I have jsnL21 C432 4/64 version
I upgraded my phone by 3 button method from 8.2 to 18.104.22.168. Using Firmware Finder, I found a newer version of my firmware in 22.214.171.124 which has a lot of improvement and battery optimization. I want to flash it on my device. I downloaded the firmware but it has 2 files:
- Update.zip 2.24GB
- Update_full_jsn_l21_hw_eu.zip 643MB
I know I should extract update.app into dload folder but the problem is I have 2 zips and inside of each files has a separated Update.app. How to upgrade with these files?