Clean flash vs Dirty flash – Custom ROM’s
22 Feb 2015Clean flash:
1.
Install
Titanium Backup. Open Titanium Backup
> Go to menu > Batch actions > Backup apps +
system data. This will
backup all your user apps, app data and all the things like wifi
passwords,
calendar events, etc. This will not backup system apps, as that mostly
will
2.
Go to
TWRP recovery (or whichever custom
recovery you are using) and do a Factory reset. This will clear cache,
user
apps and data that those apps were using. The data (images, movies,
music, etc.)
that you have in your internal/external SD card/storage will remain
intact.
3.
In
the TWRP recovery, flash the new ROM files in
the following sequence: Firmware update (if any) > Custom ROM
> GAPPS
> Custom Kernel (if any). Then wipe Dalvik/Cache.
4.
Reboot
system.
5.
Do
initial system setup (skip restoring your
apps via Google account).
6.
Install
Titanium backup. Restore user apps +
data.
Dirty Flash:
1.
Go to
TWRP. Clear cache/Dalvik.
2.
In
the TWRP recovery, flash the new ROM files in
the following sequence: Firmware update (if any) > Custom ROM
> GAPPS
> Custom Kernel (if any).
3.
Reboot
system.