I have a sprint s3 and I just rooted my phone and it was done correct. my question is do I need to download the roms to my computer first then copy to my phone.I have been trying from my phone. it downloads but can't open. help please. thanks
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See also: I've rooted my phone. Now what? What do I gain from rooting? – Izzy♦ Mar 29 '13 at 15:02
Installing a custom ROM implies a number of steps:
- Root your phone.
- Flash a custom recovery (4ext or CWM).
- Store on you sd card a downloaded custom ROM.
- Reboot your phone into recovery, select the desired ROM and flash it.
- Reboot and have fun.
Note: Please BACKUP your data before doing anything! Better safe than sorry.
This article explains in detail each step. You can also find a lot of info about flashing, custom ROMs and all sort of things on XDA developers forums.
Make sure you have a proper recovery like CWM or TWRP
Download the ROM file off XDA, make sure you download a file made for only your system.
Wipe date and do a factory reset
(optional: make a backup of your stock ROM)
Flash your ROM
Wipe date and factory reset, reboot and $$profit$$