CWM Question

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Hey guys

I've never modded my phone at all when it comes to custom ROM's, etc. My friend told me today that he flashed a CM9 ICS nightly build and it sparked some interest in me.

I read that to get the CM9 ROM you need to have CWM installed on your phone. Is that necessary? If so, why?

I also read that it will void my phones warranty if I install CWM...now obviously nothing is "suppose" to go wrong with the phone while doing this process and I heard that if the phone is soft bricked it can be recovered with nvflash (is this true?).

Finally, is there anything stopping me from flashing a stock bootloader (is that what CWM is?) onto the phone and then a stock ROM, allowing me to do a return on the phone without them knowing?

I'm completely new to this and this whole forum is so confusing and the only real easy instructions I found were on the CM9 site.

Thanks guys,
Elliott

EDIT: I also just saw on this video: http://www.youtube.com/watch?v=1uK-k3KfY5c

He used some sort of USB dongle at the end for something...what did it do?

Everything you need and more in the relevant thread. With such basic questions and the apparent lack of ability to search, read and digest information, you would be wiser to stick to stock, official ROMs though.

http://forum.xda-developers.com/show....php?t=1419102

Thanks but of course that did not answer any of my questions. I have already seen that and obviously you didn't read my post correctly. I am more interested in the warranty issues with doing this...and if it's possible to comletely revert everything to the point where they can't tell what was done with the phone...I have searched around.

What issues do you think you'll run into that will warrant you sending the phone in? Im on my second samsung phone and they've been flawless, warranty be damned, flash away.

CWM "clockworkmod" is a recovery mode replacement for the stock SGS2.

It's used to do a number of things, one of which is to flash items to the device such as full roms or kernels. I'll let you read up on the rest. Without the need to have your device connected to a pc.

Flashing anything unofficial is bound to void your warranty whether via CWM or Odin etc.

The older bootloader allows the use of a USB jig to reset the warning triangle and flash counter to conceal any warranty voiding activity. At some point (can't remember when) Samsung updated the bootloader to prevent the jig working. A simple flash of the older one fixes the issue and doesn't appear to affect the device usage.

There are some great articles on xda to read about flashing etc. Worth a look.

Hope this helps.

Sent from my GT-I9100 using XDA

Originally Posted by peachpuff

What issues do you think you'll run into that will warrant you sending the phone in? Im on my second samsung phone and they've been flawless, warranty be damned, flash away.

Hey

Well I'm not planning on the phone having any issues...but you never know what could happen...When I first got my SGS2 the home button stopped working within 24 hours and I had to go back and get another one...

I'm just saying anything could happen...ex: buttons breaking, etc.

Originally Posted by aceofclubs

CWM "clockworkmod" is a recovery mode replacement for the stock SGS2.

It's used to do a number of things, one of which is to flash items to the device such as full roms or kernels. I'll let you read up on the rest. Without the need to have your device connected to a pc.

Flashing anything unofficial is bound to void your warranty whether via CWM or Odin etc.

The older bootloader allows the use of a USB jig to reset the warning triangle and flash counter to conceal any warranty voiding activity. At some point (can't remember when) Samsung updated the bootloader to prevent the jig working. A simple flash of the older one fixes the issue and doesn't appear to affect the device usage.

There are some great articles on xda to read about flashing etc. Worth a look.

Hope this helps.

Sent from my GT-I9100 using XDA

Hey thanks for posting.

So you're saying that if I flash CWM, and then need to return the phone for whatever reason, I can install the original Samsung recovery tool that was there prior to installing CWM? Is that what you mean by "a simple flash of the older one..."?

Basically, if I ever need to return the phone, can I make it reset 100% original so that even if they knew how to check for stuff like CM9 and CWM, they wouldn't be able to find out that it was ever installed?

And when Samsung releases their official firmware and I decide I want to flash to that one, can I still use it? I'm guessing I could just flash it normally using CWM, but what if I wanted to go back to 100% original and update from there?

Originally Posted by Starholdest

Thanks but of course that did not answer any of my questions. I have already seen that and obviously you didn't read my post correctly.

Well that kind of attitude just irks me.

Unless I lack the ability to count, you asked a total of five questions, all of which are answered in that thread and countless others around this forum.

Anyway, your apparent main concern has to do with wanting to commit fraud. If you're okay with that, keep going. I guess since you're happy to break forum rules (rule #1), why not try and fudge a warranty claim?

Yes you can return your device to completely Telco/carrier stock.

If you want to do it...
Make a CWM backup.
Backup everything to pc from internal SD. A simple copy will do.
Use CWM to format internal SD.
Boot into download mode and flash Telco/carrier stock firmware via Odin.
Use jig to reset flash counter.
Use stock recovery to wipe device.

This should be as it was when you pulled it out of the box on day one.

When you get it back use cfroot kernel to root via Odin.
Copy SD card backup from pc to SD.
Restore CWM backup.

Should now be as it was before resetting to stock. Except maybe the modem if you like a different one from Telco/carrier stock.


Sent from my GT-I9100 using XDA

Originally Posted by aceofclubs

Yes you can return your device to completely Telco/carrier stock.

If you want to do it...
Make a CWM backup.
Backup everything to pc from internal SD. A simple copy will do.
Use CWM to format internal SD.
Boot into download mode and flash Telco/carrier stock firmware via Odin.
Use jig to reset flash counter.
Use stock recovery to wipe device.

This should be as it was when you pulled it out of the box on day one.

When you get it back use cfroot kernel to root via Odin.
Copy SD card backup from pc to SD.
Restore CWM backup.

Should now be as it was before resetting to stock. Except maybe the modem if you like a different one from Telco/carrier stock.


Sent from my GT-I9100 using XDA

Excellent thanks for your help!

So as soon as I boot into download mode and flash telco/carrier stock firmware via Odin, will CWM be erased? Also, what about what this gentleman said?

The older bootloader allows the use of a USB jig to reset the warning triangle and flash counter to conceal any warranty voiding activity. At some point (can't remember when) Samsung updated the bootloader to prevent the jig working.

What if I have the updated bootloader?

Yes CWM is removed by flashing official firmware so original recovery from then.

If jig doesn't work use Odin to flash the old bootloader. It definitely will work then.


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