Question of steps to flash custom rom - Verizon Samsung Galaxy S III

So I'm about to flash a custom rom an I'm confused about flashing the roms an kernels. I'm already rooted and know to flash recovery via ez recovery. I plan on running Synergy. Is there anything else I should do prior to flashing roms, specifically synergy? I know these roms are built for the what was locked bootloader so do these roms just flash the stock kernel when you flash the rom? Thanks
Sent from my SCH-I535 using xda app-developers app

Boot into recovery and Make a backup of your current setup. Then wipe data and cache and dalvik. Then flash the Rom. If it asks you to skip or disable recovery flash upon trying to reboot click yes.

Thanks. Yeah I got all that but more concerned if I need to flash a kernel with the rom. I also here about backing up the IMEM or something like that.
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You don't need to flash a kernel with Synergy. Just flash the ROM (with proper backup and recovery of course)! You also don't need to worry about IMEI for now. There was a backup process with the efs partition, but people have just been rewriting it with QPST if they lose it. Have fun!

Bleelas said:
You don't need to flash a kernel with Synergy. Just flash the ROM (with proper backup and recovery of course)! You also don't need to worry about IMEI for now. There was a backup process with the efs partition, but people have just been rewriting it with QPST if they lose it. Have fun!
Click to expand...
Click to collapse
Thank you!
Sent from my SCH-I535 using xda app-developers app

No prob! Just for a little more information, you CAN backup your efs partition and restore it still, but the issues have been with AOSP ROMS. It probably a good idea to do it, but considering you're talking about Synergy and there's a way to rewrite it, you probably don't NEED to. Also, as far as flashing kernels, the ROM threads usually say if they also come with a kernel or not, whether they need kexec or not (soon a thing of the past!), and what kernels they are compatible with. Generally speaking, a TW ROM needs a TW kernel (like the stock kernel), and an AOSP ROM needs an AOSP kernel.
The last option to backup your IMEI is:
http://rootzwiki.com/topic/32397-tutorial-imei-backup-nv-with-qpst-us-variants/
I'd go ahead and do it and then you don't need to worry

All good information I've been exactly looking for lol. But yeah the whole kexec thing has really confused me.
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tu3218 said:
So I'm about to flash a custom rom an I'm confused about flashing the roms an kernels. I'm already rooted and know to flash recovery via ez recovery. I plan on running Synergy. Is there anything else I should do prior to flashing roms, specifically synergy? I know these roms are built for the what was locked bootloader so do these roms just flash the stock kernel when you flash the rom? Thanks
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
Look in the developer forum for this phone, droidstyle did an amazing step by step for doing a few things for the sgs3
Sent from a Galaxy far, far away...

Related

Is there ap that backs up just your kernel like on the

Sgs? There was a app called kernel flasher I believe that allowed you to backup kernels and flash others..... I know I can backup rom, flash kernel and if I don't like it I can just restore my backup, but the restoring takes forever. I'd rather just flash the stock kernel... Or is there a stock kernel zip floating around I missed?
Thanks
Stock kernel zip would be great. That's what preventing me from flashing a kernel right now.
bighulk666 said:
Stock kernel zip would be great. That's what preventing me from flashing a kernel right now.
Click to expand...
Click to collapse
Just flash current rom without wiping... gets kernal back keeping everything
Sent from my LG-P999 using XDA Premium App
smashpunks said:
Sgs? There was a app called kernel flasher I believe that allowed you to backup kernels and flash others..... I know I can backup rom, flash kernel and if I don't like it I can just restore my backup, but the restoring takes forever. I'd rather just flash the stock kernel... Or is there a stock kernel zip floating around I missed?
Thanks
Click to expand...
Click to collapse
Yeah I miss that program. Funny thing is I'm still stock.
On my vibrant I'd flash almost daily.
This phone seems where the vibrant peaked out of the box.
So I just have not needed to.
But you just took me back.
Give it time.
Sent from my LG-P999 using XDA Premium App

Quick rooting question

Hey guys,
Finally got around to working on my phone. I have a question. I've been following this guide here to the letter. But I skipped step 1 as I thought rooting was only for 2.2 Froyo G2x owners as mine's already been updated to 2.3. Do I still need to root it to flash CWM while I'm logged into my phone??
Thanks in advance!!
If flashing cwm via nvflash doesn't work then you'll need to root first, it's been quite some time since I last did this, but I'm pretty sure all you need to do is flash cwm using nvflash and then install the rom of your choice
jj_z1 said:
If flashing cwm via nvflash doesn't work then you'll need to root first, it's been quite some time since I last did this, but I'm pretty sure all you need to do is flash cwm using nvflash and then install the rom of your choice
Click to expand...
Click to collapse
Followed the guide here and flashed the root file.
One last question. Can I install roms and kernels from rom manager, or do i do both from cwm?
zeth006 said:
Followed the guide here and flashed the root file.
One last question. Can I install roms and kernels from rom manager, or do i do both from cwm?
Click to expand...
Click to collapse
I honestly never tried to install roms, or kernels, from rom manager, I think you need to buy the premium app to be able to do so. Either way, it's always safer to flash from cwm since you can wipe everything you need to from there (ie. cache, dalvik cache, system, and data) which is very important when flahing different roms, and kernels
jj_z1 said:
I honestly never tried to install roms, or kernels, from rom manager, I think you need to buy the premium app to be able to do so. Either way, it's always safer to flash from cwm since you can wipe everything you need to from there (ie. cache, dalvik cache, system, and data) which is very important when flahing different roms, and kernels
Click to expand...
Click to collapse
Okey dokes. Off to try it out.
jj_z1 said:
I honestly never tried to install roms, or kernels, from rom manager, I think you need to buy the premium app to be able to do so. Either way, it's always safer to flash from cwm since you can wipe everything you need to from there (ie. cache, dalvik cache, system, and data) which is very important when flahing different roms, and kernels
Click to expand...
Click to collapse
Just to reiterate, on this particular phone it's not the best idea to flash with rom manager at all. Always go with cwm.
Sent from my LG-P999 using xda premium
Super One Click has been updated with a new exploit that can root the G2X Gingerbread without flashing CWM Recovery. Get the new version of Super One Click and root it that way. Or flash CWM Recovery and then flash my root zip.
jboxer said:
Super One Click has been updated with a new exploit that can root the G2X Gingerbread without flashing CWM Recovery. Get the new version of Super One Click and root it that way. Or flash CWM Recovery and then flash my root zip.
Click to expand...
Click to collapse
Cool. I'll do that with the next phone I get, haha!
I will get my 2nd g2x in 4 days. Looking for guide for s-off,root,super Cid I'm guessing flashing a rom is just like any other phone. Has anyone ran an ics rom on their g2x?
Sent from my Sensation using xda premium
hardrockinandroid said:
I will get my 2nd g2x in 4 days. Looking for guide for s-off,root,super Cid I'm guessing flashing a rom is just like any other phone. Has anyone ran an ics rom on their g2x?
Sent from my Sensation using xda premium
Click to expand...
Click to collapse
ICS for G2x is a work in progress. I believe CM team is working on it.

[Q] TWRP vs. CWM

I remember seeing over in the Dev. forums that CWM recovery isn't restoring the kernel properly when people try to restore their backup of the stock ROM
Does this happen with TWRP as well? Or is the issue with the stock ROM / Kernel?
I'm hesitant to try CM9 and would like a clean way to recover to the stock ROM without having to use the downgrade method and reinstall everything.
edgemaster191 said:
I remember seeing over in the Dev. forums that CWM recovery isn't restoring the kernel properly when people try to restore their backup of the stock ROM
Does this happen with TWRP as well? Or is the issue with the stock ROM / Kernel?
I'm hesitant to try CM9 and would like a clean way to recover to the stock ROM without having to use the downgrade method and reinstall everything.
Click to expand...
Click to collapse
From what I read in the CM9 thread someone had the same issue when using TWRP.
Nandroids don't include the kernel i believe it must be restored seperately
It should, wouldn't that be in boot.img? I know on my Droid Inc I have gone between sense and aosp backups, both using different kernels.
Sent from my ADR6300 using Tapatalk 2

How Do I Backup the Operating System?

I rooted my S3. I have not unlocked it.
I would like to backup the android operating system, the apps, and the data before I allow the recent OTA update.
Based on my research, I believe I can use titanium to backup everything except the operating system. How do I backup the operating system?
I tried the Volume Up/Power/Home Button restart. It gives me the option to restore but not to backup.
What am I missing??
chinook9 said:
I rooted my S3. I have not unlocked it.
I would like to backup the android operating system, the apps, and the data before I allow the recent OTA update.
Based on my research, I believe I can use titanium to backup everything except the operating system. How do I backup the operating system?
I tried the Volume Up/Power/Home Button restart. It gives me the option to restore but not to backup.
What am I missing??
Click to expand...
Click to collapse
Have to install a custom recovery.
prdog1 said:
Have to install a custom recovery.
Click to expand...
Click to collapse
prdog1
Thank you for the speedy reply. I did a quick search and found quite a bit written on installing a custom recovery including on the S3.
It appears that I can only back up to a custom ROM such as ClockworkMod Recovery or TWRP Recovery and not the base ROM as it is on the phone now. Is that correct?
I have ROM manager on the phone so I expect the ClockworkMod Recovery would be the way to go.
Nope, CWM and TWRP are custom recoveries. You'll have to install one of those in order to backup. Go onto the app store and search for EZ Recovery. Use that app to install the recoveries(it's the easiest way for someone new). Then you just boot into your recovery and do a backup of your current setup.
Download EZ Recovery and flash CWM then boot into recovery and choose the backup option.
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Custom recovery will backup stock rom. You will not be able to install any OTA until untill you Odin back to stock.
Thank you for the replies.
I guess I should have included in the initial post that all I have done is root the phone......I think.
I never unlocked the phone with Ez-Unlocker
I never used Rom-Manager either.
I did install SD Speed Increase and increased the SD cache size from 128kb to 1024 kb.
Thats it.
Does this information change the previous recommendations?
No, just install EZ Recovery and follow the directions listed in one of the guides in the stickies.
Sent from my SCH-I535 using xda premium
chinook9 said:
Thank you for the replies.
I guess I should have included in the initial post that all I have done is root the phone......I think.
I never unlocked the phone with Ez-Unlocker
I never used Rom-Manager either.
I did install SD Speed Increase and increased the SD cache size from 128kb to 1024 kb.
Thats it.
Does this information change the previous recommendations?
Click to expand...
Click to collapse
Yes, if you have a custom recovery you cannot accept an OTA. The install will fail. You will have to Odin back to stock in order to take the OTA.
Sent from my SCH-I535 using xda app-developers app
Thank you for the input.
There is a lot of information on this topic but its not easy to determine which of it applies to my situation. I feel pretty good about being able to Odin back to stock but I'm not sure I want to take the risk of doing that (probably not much risk) just to get the latest update.
I expect the best thing for me to do is decide to either 1) go ahead and install CM10 (I think that's the one I would want) or 2) go back to stock and stick with the Verizon software. I'd like to get Jelly Bean now, but I'm not sure its worth the risk. We'll see.
Thanks again!
If u use ez recovery and flash back the stock recovery u can then accept the ota just fine. As long as u haven't messed with any system files you are good. Then just re root it once ota is done.
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musclehead84 said:
If u use ez recovery and flash back the stock recovery u can then accept the ota just fine. As long as u haven't messed with any system files you are good. Then just re root it once ota is done.
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
Thanks for the info.
I have installed EZRecovery and it seems pretty straightforward. I'm still trying to decide if I want to go for a Jelly Bean ROM now or just wait.
I'll just keep reading until I'm comfortable that first, Jelly Bean will give me improvements worth the risk, and second, I won't brick the phone.
I have been fooling with computers since the 70s but Android is somewhat different and it will take a while to learn something about the architecture.
Thanks again.
chinook9 said:
Thanks for the info.
I have installed EZRecovery and it seems pretty straightforward. I'm still trying to decide if I want to go for a Jelly Bean ROM now or just wait.
I'll just keep reading until I'm comfortable that first, Jelly Bean will give me improvements worth the risk, and second, I won't brick the phone.
I have been fooling with computers since the 70s but Android is somewhat different and it will take a while to learn something about the architecture.
Thanks again.
Click to expand...
Click to collapse
If new I would flash an ICS rom first and get you a stable daily driver setup and backed up. Regardless of what you read all JB builds are buggy to an extent since they are all ports. The advantage of Android is as long as you have a stable Nandroid you can experiment with more advanced ports. Backup IEMI also and be careful jumping back and forth between AOSP and TW based roms. This is where the most problems come up. From what I've seen if flashed AOSP base it is best to Odin back to stock before going back to Touchwiz.
HI F2 said:
Download EZ Recovery and flash CWM then boot into recovery and choose the backup option.
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
Or Twrp
I prefer twrp as it will allow you to name the backup from within recovery as well as some things cwm doesnt do.

When I flash a MOD

When do I flash a mod in the flashing process? After the ROM, obviously... Do I need to boot the phone up at all before flashing a mod?
Thanks for the patience when you answer. I looked but didn't see my question asked before... I know it's a noob question.
Sent from my SCH-I535
Hmm, I always prefer to flash them separately. When I used to flash mods, I would flash the rom, boot to make sure it runs ok (aka no crazy force closes), then flash the mod. I'm sure that you can flash both at once but I rarely did on my last phone.
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SlimSnoopOS said:
Hmm, I always prefer to flash them separately. When I used to flash mods, I would flash the rom, boot to make sure it runs ok (aka no crazy force closes), then flash the mod. I'm sure that you can flash both at once but I rarely did on my last phone.
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
This right here. It honestly is hit or miss though. Sometimes I would have zero issues flashing the rom , kernel, and mod all at once back to back. Other times u would be in hell doing that. I have honestly noticed best performance flashing the ROM clean (complete wipe) the. Rebooting... once the ROM settles I go back to recovery and wipe cache and dalvik flash the kernel. Reboot and once that settles, I do the same thing as the kernel. Recovery, wipe cache and dalvik, flash mod and fix permissions. Then boot and done. May seem redundant but it works best for me and I get zero issues
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I flash rom, kernel, restore data if wanted, flash mods, flash themes all at once with TWRP with no problems. Never have fixed permissions. If have to fix permissions you flashed something that UID didn't match. Usually happens when flashing over data.
I've only had problems when I flash ROM then MOD before booting up once.
Thanks so much!
Sent from my SCH-I535

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