How do I "Go Pristine"?

  1. Make sure that you have ClockWorkMod installed
    .
  2. Make a backup of important data, such as SMS Log, Call Log, Contacts (if you don't sync to Google), etc.
    No need to perform backup of apps, especially System apps!
    .
  3. Create a Nandroid backup of your current system, I suggest in .tar format instead of dup format.
    This will be necessary if you need to go back to your previous ROM.
    .
  4. Turn off your phone, eject the SD Card
    .
  5. Backup (copy) the whole contents of the SD Card to a PC (Windows, Mac, Linux, no matter)
    -- or --
    Prepare a new SD Card
    .
  6. (Optional, but recommended, especially if you want to use Link2SD later on) Repartition your SD Card, even if it's previously partitioned.
    Make 2 primary partitions; the 1st one as FAT32, the 2nd one as ext2
    (You *don't* want ext3/4 on a flash memory. Trust me)
    .
  7. Format your SD Card accordingly. (I.e., 1st partition as FAT32, 2nd partition (if you made one) as ext2
    .
  8. Copy the following to the root directory of your SD Card:
    • Your ROM installer updatezip
    • (If needed/specified by the ROM) GApps updatezip
    • The /clockworkmod directory from the previous SD Card contents (you did backup your SD Card, didn't you?)
    .
  9. Insert your (partitioned, formatted, and copied-to) SD Card into your phone
    .
  10. Boot into Recovery
    .
  11. Wipe/format the following (find the proper entry in the CWM menu structure):
    • /data
    • /system
    • /cache
    • Dalvik Cache -- please note that this is *different* from the /cache of the previous line!
    • Internal SD
    • Battery Stats
    Leave the External SD alone!
    .
  12. Install your new ROM, following exactly the instructions by the ROM-cooker/dev
    .
  13. Now, this is VERY IMPORTANT: DO NOT EVER RESTORE ANY APP FROM YOUR PREVIOUS TITANIUM BACKUP SET!!!
    ALWAYS DO FRESH INSTALLS FROM THE PLAY STORE!
    You are allowed to restore some data, though: SMS Log, Call Log, and Contacts Book. That's it. Nothing else
    However, please read the 2nd post of this thread for some interesting thoughts.
    .


I have been installing my ROMs with "Pristine" way. Yes, reinstalling everything *is* tedious, but as a benefit, the new ROM runs smoothly, and a lot of problems that others (who did not go the "Pristine" way) never happened on me.

 

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