Before Starting Make Sure Your Device Bootloader Is Unlocked And Your Devices Has Installed Custom Recovery Like TWRP Or Orange Fox Recovery
Follow These Steps Carefully Otherwise It Can Brick Your Device!1) Download The Custom Rom For Your Device You Like But Make Sure It Made For Your Device Because Flashing Other Device Rom In Your Device Can Brick Your Device Or Stuck On Boot loop.
2) Turn Off Your Device And Click Power + Volume Plus Button Or Power + Both Volume Plus And Minus Button Together To Turn On Recovery Mode Or Boot Menu,
For Boot Menu You Will See 3 Options Recovery Mode, Fastboot Mode, Normal Reboot,
3) Then Once The Recovery Mode Open Click On Wipe Then Select Advanced Wipe Then Tick Dalvik Cache, System, And Cache Don't Click On Data, Internal Storage, SD Card, USB OTG. Then Swipe To Wipe After Wiping Click Back And Click On Install Then Select The Custom Rom Zip File And Click Install Then Wait Until The Installation Is Complete It Can Usually Take 10-15 Minutes Depending On Your Device Performance Then Once Complete Click Reboot To System Then It Will Reboot But Because Its The First Reboot On New Custom Rom That's Why It Can Take Mush More Time Than Usual For Booting After Boot Is Finish Your Custom Rom Has Been Installed And You, Will, See All Your Apps, Games Data, Your Current Settings, Your Display Settings Layout All Is Same As Before The Flash And The Rom Is Installed Without Any Problem.
The Main Reason Why Your Device All Data Erased, Apps Uninstalled Or Settings Changed When You Flash Custom Rom When You Click On Wipe Than Advanced Wipe Than Tick On Dalvik Cache And System You Also, Click On Data That's Why Your All Apps And Settings Deleted And And You Need To Install it Later Or If You Take Backup Than You Can Restore It, Many Youtubers Say To Backup Your Data Before Flashing Rom Because Your Data(Apps, Games, Settings) Will Be Deleted After Flashing New Rom Because They Also Say To To Wipe Data In The Wiping Time
(But In This Method, You No Need To Take Backup Of Your Data Because You Don't Need To Wipe The Data In Recovery Mode But Still Backup Is Recommended)This Is All The Partitions You Need To Wipe And The One You No Need To Wipe:
| No. | Wipe | Wipe (Optional) | Don't Wipe |
|---|---|---|---|
| 1 | Dalvik Cache | ||
| 2 | System | ||
| 3 | Cache | ||
| 4 | Data | ||
| 5 | Internal Storage | ||
| 6 | Micro SD Card | ||
| 7 | USB OTG |
Disclaimer
I'm Not Responsible For Any Kind Of Damage In Your Device Like Bricked Device,
Internal Or SD Card Format, Device Destroyed Etc. You Are Responsible For Any
Thing You Done On Your Device Do Everything On Your Own Risk!