Should you wipe before installing stock Jellybean? - Nexus S Q&A, Help & Troubleshooting

I have CM9 + matr1x kernel on my phone right now; can I simply install the stock jellybean zip on top of everything (followed by matr1x for JB) or should I wipe everything first?

Wiping ensures you have a clean install. I personally would. Just make sure you make a backup

Nandroid, and full wipe whenever switching ROMs. Some argue other wise but it is so easy to do why not? Titanium Backup restores apps...easy.
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Related

Restore Nandroid Backup after flashing custom rom?

Hey.
If I flash custom rom and then decide to go back to stock rom, do I just run the nandroid backup on top of the custom rom, or I have to wipe or something to make it run smooth and fast?
Thanks.
I just restore. But if u feel a lil frantic about issues do the normal wipe process
Sent from my LG-P999 using XDA Premium App
SAme here, never wiped, always worked great.
It wont hurt, but it wont change anything either, because restoring the nandroid rom actually does that for you automatically

Nandroid backup restore

I was running a ROM versed on ulcb3 and using the entropy DD kernel. I just restored a nandroid backup to an L2 based ROM that was packaged with infusion-GB A2. I wiped prior to restore in cwm.
My settings now tells me I'm using the b3 baseband, and I can't tell what kernel I'm on. does a nandroid backup restore the modern and the kernel? I'm guessing kernel yes, modem no. Can anyone confirm?
Sent from my SAMSUNG-SGH-I997 using XDA App
You have to flash the kernel you were using with the backup. I wipe data, flash the kernel that is supposed to be with my restore then ill do my nandroid restore. You then have to flash the modem that you want. Doing restores on the infuse is a little tricky at first.
Sent from my SGH-I997 using xda premium
On a similar note.... when switching between roms that are both nandroided, full wipe, cache, and dalvic are still necessary? I figured a nandroid restore would rebuild the whole phone to the snapshot that was taken at the time of backup......
Sent from my SAMSUNG-SGH-I997 using XDA
chipstien said:
On a similar note.... when switching between roms that are both nandroided, full wipe, cache, and dalvic are still necessary? I figured a nandroid restore would rebuild the whole phone to the snapshot that was taken at the time of backup......
Sent from my SAMSUNG-SGH-I997 using XDA
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I do a full wipe. It only takes 20 seconds extra.
Sent from my SAMSUNG-SGH-I997 using xda premium
Ya for some odd reason when i attempt to use the nandroid back up & restore future i get bootloops on the samsung screen upon restoring, i don't get it. On my HTC i can do it without any problems. Do i have to flash the appropriate kernel for the ROM when i want to revert to it?
slicingtaco said:
Ya for some odd reason when i attempt to use the nandroid back up & restore future i get bootloops on the samsung screen upon restoring, i don't get it. On my HTC i can do it without any problems. Do i have to flash the appropriate kernel for the ROM when i want to revert to it?
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Never had luck with the nan backup...I use Zen tool kit for the infuse...to do a full back up...works great...
Sent from my SGH-I997 using xda premium
slicingtaco said:
Ya for some odd reason when i attempt to use the nandroid back up & restore future i get bootloops on the samsung screen upon restoring, i don't get it. On my HTC i can do it without any problems. Do i have to flash the appropriate kernel for the ROM when i want to revert to it?
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When restoring a nandroid, you should only restore the data in the advanced restore option. Make sure to do wipes prior to flashing a new ROM.
Sent from my Kindle Fire using Tapatalk 2

Question regarding Sick Sense ROM

I am currently running CleanROM 4.0 Standard edition Build 1.85
I am wondering if it is fine to flash Sick Sense ROM despite it is based on Build 1.88?
You should always do a full wipe when switching roms. Its your choice but you may have some weird bugs and no one likes bugs..
I agree bro. I always wipe everything for fresh install hoping to elimate any potential problems. Wipe cache/dalvick, factory restore, wipe system (existing ROM)... Install! Be careful if you wipe system. I'd imagine if you wipe it and your phone dies it can be trouble. Then on to the dreaded titanium restore. You should be good to go
sent from my fire breathing HTC OneXL using xda-developers app
InflatedTitan said:
I agree bro. I always wipe everything for fresh install hoping to elimate any potential problems. Wipe cache/dalvick, factory restore, wipe system (existing ROM)... Install! Be careful if you wipe system. I'd imagine if you wipe it and your phone dies it can be trouble. Then on to the dreaded titanium restore. You should be good to go
sent from my fire breathing HTC OneXL using xda-developers app
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Do you mean flashing back stock RUU?

Jb v4 unofficial back to ics

I'm currently on jb and I'm trying to go back to ICS. But every time I try to flash it I get stuck on the boot image? Do I have to flash ICS boot loaders?
Sent from my GT-I9000 using Tapatalk 2
Are you trying to restore a nandroid backup or just install an ics ROM? Which ROM are you trying to go to?
I went from JB back to slim and remics. I had to make sure I wiped everything, and I did a fresh install instead of a restore.
When moving from a newer rom to an older rom you usually have to flash twice. In your case once from the JB CWM and then again from the ICS CWM.
I had same problem. I do full wipes and flash ICS.
Sent from my SGH-I897 using xda app-developers app
I made it so:
1) Flashed Semaphore ICS kernel with Odin
2) Viped data and cache
3) Restored nandroid backup with Semaphore CWM
4) Restored apps with Titanium backup

General ROM installation questions

When going from one ROM to another (ie. AOKP to CM10), is it only necessary to do a "clean" wipe, or are other steps recommended, such as reverting to stock first? I used to have a Droid 2 and people used to recommend that, but I don't know if it's necessary with this phone.
Also, what exactly does a "clean" wipe entail? I've seen multiple explanations. This guide suggests that you need only wipe data/factory reset and format system. Other people mention things like wiping cache and dalvik cache from recovery. Is there any sort of consensus on this?
Lastly, is it necessary to do these "clean" wipes when flashing a new nightly or new build, or does this simply vary depending on the ROM in question?
Thanks.
If you change ROMs most people recommend doing a data wipe.
Clean wipe is wiping data. If you wipe data, /cache is wiped too, so any subsequent cache wiping is unnecessary.
It is not necessary to wipe data when flashing a nightly or updated build.
When going from one Rom to another or one base to another (4.1 to 4.1.2) a full wipe is recommended that's system, data, cache. Nightly builds are usually safe to flash on top of each other unless otherwise noted. Biggest advice I can give is if you don't do a full wipe and encounter bugs you should go back and do a full wipe to ensure its the dirty wipe that caused it.
Neverendingxsin said:
When going from one Rom to another or one base to another (4.1 to 4.1.2) a full wipe is recommended that's system, data, cache. Nightly builds are usually safe to flash on top of each other unless otherwise noted. Biggest advice I can give is if you don't do a full wipe and encounter bugs you should go back and do a full wipe to ensure its the dirty wipe that caused it.
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+1 its just not worth it.. Full wipe
Also when changing roms if the rom you are running has a custom kernel and the new rom uses a stock kernel but doesnt flash it then you will wanna make sure you flash a working kernel too
Sent from my SCH-I535 using xda app-developers app
x714x said:
Also when changing roms if the rom you are running has a custom kernel and the new rom uses a stock kernel but doesnt flash it then you will wanna make sure you flash a working kernel too
Sent from my SCH-I535 using xda app-developers app
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Ha, I have made this mistake before.
x714x said:
Also when changing roms if the rom you are running has a custom kernel and the new rom uses a stock kernel but doesnt flash it then you will wanna make sure you flash a working kernel too
Sent from my SCH-I535 using xda app-developers app
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How can I verify this? It looks like AOKP has a custom kernel; what are the extra steps I need to take if I want to go to CM10 or back to stock?
Quacker said:
How can I verify this? It looks like AOKP has a custom kernel; what are the extra steps I need to take if I want to go to CM10 or back to stock?
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If you're on AOSP (which includes CM10 and AOKP) then you'll need to reflash an ICS Touchwiz Kernel to go back to stock. You can go from CM10 to AOKP on the same kernel, depending on the merges. Sometimes new merges make it so an older kernel won't boot, etc.

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