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Possible Duplicate:
What is the difference between: Rooting, Jailbreak, ROM, Mod, etc.?

What is a custom ROM, and what does "flashing a custom ROM" mean?

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marked as duplicate by Matthew Read Apr 16 '12 at 20:30

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

Here's a good question about the rooting part of your question: (the top answer includes the whats and whys of rooting as well as the how) – Matt H Feb 16 '11 at 10:43

1 Answer 1

up vote 8 down vote accepted

Edited to answer the edited question

Note: the CyanogenMod and Fresh 3.5 links below are links to EVO Roms as an example - you need to find the correct ROM for your device

"Flashing a custom ROM" basically means to load a different version of the Android OS. This site actually explains it very well. A custom ROM is the full Android OS customized by the ROM builder usually to make it faster, provide better battery-life or add new features.

AOSP ROMs like CyanogenMod offer stock Android which will remove things like HTC's Sense or Sprint's Apps. CyanogenMod's ROM is one of the more popular ROM.

Other Roms like Fresh 3.5 offer a ROM very similar to the default experience (with added speed and battery-life) by leaving Sense (or whatever skin your device has) and incorporating over the air updates into an updated version of the ROM.

In order to flash a custom ROM you must first root your device. For information about rooting see Matt's comment on the OP or my original answer below:

When I had the same question this is where I found it:

Depending on what device you have the rooting method will be different though. Personally I suggest reading up on your device at XDA

Hope this helps

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That was a good blog about basics of Rooting. – sat Feb 17 '11 at 3:09
Since the rooting bit is covered in the question Matt linked to, I am going to edit this question to just be about Custom ROMs. As such, I suggest you a) add any useful info from your answer here to the rooting question's answer if it is not covered there, and b) rewrite this answer to fit my edit (or delete this and add a new answer). Sorry for the disruption. – Matthew Read Feb 17 '11 at 3:33
@Matthew Edited - let me know if that fits a little better to the question, if not I can take another stab at it :). – Daniel Feb 17 '11 at 22:50
Great answer! :) – Matthew Read Feb 17 '11 at 23:57

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