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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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2 Answers

Installing a custom ROM implies a number of steps:

  1. Root your phone.
  2. Flash a custom recovery (4ext or CWM).
  3. Store on you sd card a downloaded custom ROM.
  4. Reboot your phone into recovery, select the desired ROM and flash it.
  5. 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.

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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 $$profit$$

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