Android always opens the door to various possibilities such as flashing custom ROM or kernel or APK modding etc. So if you have accidentally bricked your device then you can easily install Stock ROM on Advan E78. Since Advan E78 is having a Spreadtrum processor, you have to use SPD Flash Tool in order to install
Get Droid Tips
Custom ROM | CyanogenMod | Android Apps | Firmware Update | MiUi | All Stock ROM | Lineage OS |