I want to downgrade my Samsung Galaxy S3 w/ the AOKP (jb-mr2) 4.3.1 ROM installed back to the AOKP (jb-mr1) 4.3 ROM. Is this possible? If so, do I have to do anything different other than wiping my cache, dalvik cache, and data before flashing the AOKP jb-mr1 4.3 using CWRecovery? Thanks!
Nope, just wipe system, cache and dalvik cache, flash ROM and reboot
Sent from my SGH-M919 using Tapatalk
I think I read somewhere that it's usually ok to just do a wipe cache, dalvik, and system when doing updates or downgrades to an existing ROM on the phone.
You want to do a complete wipe, including the above wipes when changing ROMs (CM to Stock or vice versa) for example.
No matter what though, always do a Nandroid backup or Titanium before you do anything. You never know what can happen with that pesky Android!
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Do I have to wipe data and cache if I'm just flashing a new version of a kernel over an old one?
From what I understand, you can probably skip wiping data/cache when flashing just a kernel or radio. Wiping data/cache is primarily used for major changes with the ROMs being flashed.
When flashing kernels I wipe cache and dalvik cache. I only do a data wipe if I'm flashing a brand new rom.
Sent from my PC36100 using XDA App
I tried flashing this ROM and after doing so and wiping both caches I rebooted the phone. As the phone rebooted the the first screen to appear was the Paranoid Android screen (with the jelly beans in the Android) and the phone remains stuck there. Is there anything I can do to restore the phone to default so I can flash the ROM again or even get the phone to another screen other than the one it is on? I haven't been able to use it all day even after a hard reset...I'm stuck
Try wiping cache, then dalvik
Did you make a backup prior to flashing? If not, you should make a habit of doing so to due to instances such as this. You can always boot into recovery, wipe data/factory reset, wipe cache, wipe davlik cache, format system.. Then either try to re flash paranoid android or chose another rom to load.
Sent from my SPH-L710 using xda app-developers app
Do I need to reflash gapps when updating to the new nightlies? And should I be wiping either of the caches for best results?
Edit: nvm, flashed the new one and wiped dalvik after. Everything working beautifully.
Sent from my SAMSUNG-SGH-I747 using xda premium
Going from a nightly to a newer nightly of the same version (i.e. a CM10.1 nightly to a newer CM10.1 nightly), you should not need to wipe your system partition, but it never hurts if you are not in a hurry. You may want to wipe cache and Dalvik cache, as it may help to optimize the new versions of apps.
You would need to wipe your system partition when changing ROM (i.e. CM10 to stock) or changing from one version of a ROM to another version of the same ROM (i.e. CM10 to CM10.1).
Wiping cache and Dalvik cache do not uninstall apps -- so no, if you only wipe cache and Dalvik cache, you would not need to reinstall Google Apps.
But wiping system will format your system partition, deleting all system apps and user apps. This means that once you have reflashed a new ROM, if you had formated your system partition, you will need to reflash Gapps also. And reinstall all your other apps.
I'm currently on Jellybeast 4.1.2 and want to try out AOKP 4.2.2
Is it easy to switch from 4.1.2 to 4.2.2 and vise versa? Will my downloads and all sd files get wiped?
Switching to 4.2.2
Wipe system
Wipe data/factory reset
Wipe cache
Wipe dalvik
Flash ROM
Flash gapps
Optional* wipe dalvik and cache again (don't really need to)
Reboot
Wait 10 mins after welcome screen comes up...don't touch anything (let the ROM settle)
Reboot and setup phone
Switching to stock 4.1.2
Flash infamous super wipe
Flash infamous cache wipe
Flash ROM
Reboot
Wait 10 mins after welcome screen comes up...don't touch anything (let the ROM settle)
Reboot and setup phone
You decide whether its easy or not and No your SD card doesn't get wiped
Sent from my Infamous Hercules.
iburnhearts said:
Switching to 4.2.2
Wipe system
Wipe data/factory reset
Wipe cache
Wipe dalvik
Flash ROM
Flash gapps
Optional* wipe dalvik and cache again (don't really need to)
Reboot
Wait 10 mins after welcome screen comes up...don't touch anything (let the ROM settle)
Reboot and setup phone
Switching to stock 4.1.2
Flash infamous super wipe
Flash infamous cache wipe
Flash ROM
Reboot
Wait 10 mins after welcome screen comes up...don't touch anything (let the ROM settle)
Reboot and setup phone
You decide whether its easy or not and No your SD card doesn't get wiped
Sent from my Infamous Hercules.
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Thank you! I will try your steps now!
edit: I ran out of thanks but I will get you tomorrow.
nursebro said:
Thank you! I will try your steps now!
edit: I ran out of thanks but I will get you tomorrow.
Click to expand...
Click to collapse
NP
If you have any questions just shoot me a PM
Sent from my Infamous Hercules.
I've been flashing for years now.. I gotta say those are some overly cautious steps..
If its an aosp based ROM... Even from 4.1 to 4.2, just wipe the cache and dalvik cache and the system partitions in recovery. That will ensure you won't force close. Wiping all of your data isn't needed. Just make sure to run a fix permissions after your flash and you'll be golden.
Sent from my SGH-T989 using xda app-developers app
I'm updating with CyanogenMod nightlies at the moment. Should I wipe data and cache each time? Won't this mean reinstalling all apps and logging back in? At the moment I don't wipe but just update each time a new version comes along.
No need to wipe data... just wipe cache partition and dalvic cache.. flash rom and gapps. Reboot.
Bit of confusion on my behalf sorry... I"m using ROM Manager and after downloading it asks if you want to update and if you want to backup existing ROM and wipe data. I sometimes back up existing so I can go back but never wipe data.
No need to wipe anything. No need to flash gapps either.
Sent from my IceCold One X