Correct and safest way to update rom? - Galaxy S III Q&A, Help & Troubleshooting

Hi there. I am currently running Liquidsmooth Rom on my i9300 and I wanted to update it to the latest version 2.9. I had a look through and couldn't find a clear way on how to flash the update. If any experienced flashers could guide me to how I should go to update my rom it'll be much, much appreciated. Thanks in advance guys.
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Muzza_94 said:
Hi there. I am currently running Liquidsmooth Rom on my i9300 and I wanted to update it to the latest version 2.9. I had a look through and couldn't find a clear way on how to flash the update. If any experienced flashers could guide me to how I should go to update my rom it'll be much, much appreciated. Thanks in advance guys.
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First of all you should always make a backup in case something goes wrong...usually only you should do is download the rom to your phone, reboot in to recovery, wipe cache, in advanced..wipe dalvik, then just go in install zip from sd card, find downloaded rom and install it, then reboot and everything should be fine

if it's not, factory reset

Backup first in recovery then flash in cwm..
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Related

[Q] Flashing A Rom Update

i currently have the cm9 beta0 on my phone, i seen they had an update that was cm9 beta1, my question is do i have to do a full wipe then flash tha update or can i just flash without wiping?, i did a search and couldnt find an answer....thanks in advanced..
jigsizzle said:
i currently have the cm9 beta0 on my phone, i seen they had an update that was cm9 beta1, my question is do i have to do a full wipe then flash tha update or can i just flash without wiping?, i did a search and couldnt find an answer....thanks in advanced..
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You don't need to wipe before flashing a newer version of a rom I am general unless the dev says a wipe is needed. So no wipe for you
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Waddle said:
You don't need to wipe before flashing a newer version of a rom I am general unless the dev says a wipe is needed. So no wipe for you
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thank you sir, youve been very helpful...

Installing a new rom

Hi sorry in advance if this kind of question comes up alot but imk looking to install a new rom onto my s3 how easy is it to do it? i already have a rom installed (darkys) is it a simple matter of finding a tutorial and just over wiping the curent rom with the new one? or do i have to go back to facotry settings and start from fresh?
Generally follow instructions on your chosen Rom thread
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Most are just wipe cache and flash over existing rom .
But easy peasy problem solver is to have a current Nandroid backup to restore if needed .
jje
does anyone know if the cynagen mod is released for the s3 i9300??
Seany_Blitz said:
does anyone know if the cynagen mod is released for the s3 i9300??
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cm10 and cm9, a quick look in development would have told you this
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Want to flash properly.

Hello everyone, I just got my new Vibrant and wanted to flash it to Jelly Bean. But I messed up everything and almost bricked my phone. Am on android 2.1. Can anyone place give me a step by step procedure on how to go about the whole flashing process. Thank u.
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kwartey said:
Hello everyone, I just got my new Vibrant and wanted to flash it to Jelly Bean. But I messed up everything and almost bricked my phone. Am on android 2.1. Can anyone place give me a step by step procedure on how to go about the whole flashing process. Thank u.
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I'm assuming you don't already have clockwork recovery on your phone? If not go here http://forum.xda-developers.com/showthread.php?t=849028 and flash clockwork mod recovery with the update.zip in section B) in the guide. Once you have that taken care of you simply go pick a rom from the development section and follow the instructions which are usually factory data reset, wipe cache and wipe dalvik cache from recovery menu then install zip from sd card. Some ROMs recommend flashing a gingerbread ROM before flashing an ICS or JB ROM. If you want a completely working phone I would recommend one of fishman or moped ryders 2.2 ROMS, ICS has the EU bug and bad gps, and JB is still in beta builds I believe. Just remember you can always upgrade by flashing with no problems but if you ever want to down grade you must Odin to stock 2.1 then go from there.
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iTz KeeFy said:
I'm assuming you don't already have clockwork recovery on your phone? If not go here http://forum.xda-developers.com/showthread.php?t=849028 and flash clockwork mod recovery with the update.zip in section B) in the guide. Once you have that taken care of you simply go pick a rom from the development section and follow the instructions which are usually factory data reset, wipe cache and wipe dalvik cache from recovery menu then install zip from sd card. Some ROMs recommend flashing a gingerbread ROM before flashing an ICS or JB ROM. If you want a completely working phone I would recommend one of fishman or moped ryders 2.2 ROMS, ICS has the EU bug and bad gps, and JB is still in beta builds I believe. Just remember you can always upgrade by flashing with no problems but if you ever want to down grade you must Odin to stock 2.1 then go from there.
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Can u please recommended any ifs or jelly bean rom I can flash straight away from 2.1 ?
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Look at my signature for a guide on how to install ICS ROMs. You'll need to look at it on your PC though and not the phone app.
Woodrube said:
Look at my signature for a guide on how to install ICS ROMs. You'll need to look at it on your PC though and not the phone app.
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I don't think he can see or SIG on xda premium, but anyway flash a froyo GB or ICS rom then flash the jellybean ROM.
Sent from my Jellied out Vibrant sandwich.
Check out the Hellybean nightlies Here and here and the Devil Kernel for ICS here and Jelly Bean here for the Galaxy S and variants.
Or you could use Odin to flash a gingerbread bootloader then flash jellybean right then.
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CyanogenMod question

If a want to upgrade to CM 10 or CM9, from my stock rom, do I really need to do a wipe data, wipe factory reset? & what would happen if I do not? Is there any chance that something bad happen to it? Thank you guys Greetings.
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TheAndroidLord said:
If a want to upgrade to CM 10 or CM9, from my stock rom, do I really need to do a wipe data, wipe factory reset? & what would happen if I do not? Is there any chance that something bad happen to it? Thank you guys Greetings.
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Yes, if coming from a GB based rom you should wipe date/factory reset.
Is there any reason why you cant? All you need to do is backup apps/app data with Titanium Backup and then restore once you have fresh rom.
TheAndroidLord said:
If a want to upgrade to CM 10 or CM9, from my stock rom, do I really need to do a wipe data, wipe factory reset? & what would happen if I do not? Is there any chance that something bad happen to it? Thank you guys Greetings.
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1. Yeah full wipe is recommended if you are downgrading or upgrading to another Android version.
2. If you don't do full wipe there are chances that your CM9 will not bee stable, freezes and lockups here and there
Swyped from Samsung Galaxy SII
What about an ICS stock rom? that's the one I'm using right now . If I install the CM rom, and if I want to downgrade to the stock rom again, could I do that? Thank you for answering.
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TheAndroidLord said:
What about an ICS stock rom? that's the one I'm using right now . If I install the CM rom, and if I want to downgrade to the stock rom again, could I do that? Thank you for answering.
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If you are moving from stock to Aosp Roms and vice versa, you have to do full wipe
Swyped from Samsung Galaxy SII
Jokesy said:
If you are moving from stock to Aosp Roms and vice versa, you have to do full wipe
Swyped from Samsung Galaxy SII
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Thank you all guys, this really helped me
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TheAndroidLord said:
If I install the CM rom, and if I want to downgrade to the stock rom again, could I do that?
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Yes, you would just flash the stock ROM using Odin, and that would "unroot" your handset in the process.
If you try to switch from stock to a custom ROM, or between different custom ROMs without wiping your data, you can soft or hard-brick your handset. It's not worth the risk.

[Q] HELP> CAN'T WIPE DATA but Get into recovery and Download mode

hi, after flash stock rom for my i9100 4.0.4, and root throught stock recovery, but today, i can't wipe data, but can wipe cache and devlik, battery stus... so i can't flash rom, and now, my i9100 can't start. i need HELP, please. i tried flash stock rom used odin but not succes. (cry)
http://forum.xda-developers.com/showthread.php?t=1756242
You need to post more details. Kernel, methods used, etc.
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I see you posted the same crap an hour ago and decided to open up a new thread about the same.
Why.....because I suppose an hours a long time in a lazy noobs life.
zachwyt said:
http://forum.xda-developers.com/showthread.php?t=1756242
You need to post more details. Kernel, methods used, etc.
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uhm, i flash only one file rom stock XWLPM 4.0.4, all is stock, kernel,rom, modem...beacuse i root used stock recovery
http://forum.xda-developers.com/showthread.php?t=2400535
I made the same mistake this is my tutorial to fix ur phone. Ur phone will be fixed for sure

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