Question about flashing Custom Roms - Samsung Galaxy Nexus

Before flashing custom ROMS using CWM, do I have to do factory reset data and wipe cache? or only dalvik cache? I'm asking this as after flashing some Custom Roms, some apps stop working and don't open up. Please help

You need to wipe data completely when flashing between different ROMs to reduce the chances of issues. If updating to a new version of the same ROM, you can usually get away with just cache/dalvik wipe.

Related

[Q] Wiping question

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

[Q] flashing zips: when to wipe data/cache/dalvik .. etc

flashed SRF 1.1.0 a couple days ago (first time rooting and all -- yeehaw!), so this is a n00b question
i know that for that, i had to data data, cache, and dalvik cache
i've also flashed the Vision kernel, which ... seemed like it didn't require wiping data or cache or dalvik cache
i've also flashed an impaled keyboard tweak and that one seemed to require wiping just cache and dalvik cache, but not data (as i recall)
so... i'm just confused, and wondering... when do i know if i need to wipe data, or just cache/dalvik, or none at all?
i just flashed the AOSP screen lock zip .. didn't see any instructions, so i figure wipe cache and dalvik, but not data (didn't want to lose my texts was my thinking)... and i just made that up. and that seemed to work. but i figure if i knew the rules of thumb, i'd feel better like i knew what i was doing
any clues / insights would be super appreciated!!
The only time u wipe:
1.
Data/Cache/Dalvik
For a rom flash that says on the rom thread wipe wipe wipe
2.
Cache/Dalvik
Is mainly when u flash themes its reccomended
3.
As for kernals and other mods unless it says to wipe then you dont need to...
Nice info so far.
After you have done this a while you can start drawing from your brain through osmosis and you will understand: if it doesn't work the way you want....EXPERIMENT.
Sent from Bonsai 7.0.3
the above post is correct, sorta.
anytime u flash something that mods /system its good practice to wipe cache and dalvik cache.
flashing a kernel, u will want to wipe cache/dalvik cache just to be safe. it prevents any sort of incompatibility between kernels.
my 2 cents

Can't Flash a new room without bootloop

So i've tried flashing Wyrms nightlies (multiple versions) and now skyraider 4.0 and every time i flash the rom, and reboot it gets stuck in a bootloop. I'm not sure what i'm doing wrong, but i can get back to my backedup roms. Any suggestions?
Are you wiping before flashing the new ROM?
What clockwork recovery version are you using? I've never had an issue with roms causing bootloops, this is my process though it might be a little overkill. Clockwork 2.5.1.2, put rom on SD card, boot into recovery, wipe data/factory reset, wipe cache, wipe dalvik cache, format boot, format system, format data, format cache, then flash the rom. I say its possibly overkill because I think most roms install scripts do some of those wipes for you but I've never run into bootloops after rom installation.
Sent from my ADR6300 using XDA App

CyanogenMod nightlies

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

Is wiping User Data must while flashing Custom Roms?

I know wipe out User data is must coming from Stock ROMs. I do flashing custom ROMs very frequently and wanted to know while flashing these custom ROMs, Wiping Data and Cache and Dalvik is what I do AND can I skip Wipe User data ?? Please help...
You will need to clean everything because you are going to avoid the bootloops.. and do it on every new installation does not matter if the rom is stock or custom
Thanks Mate!!

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