I always think that flashing a new ROM will put the new ROM image in /system and wipe everything there.
but seems that flashing a new ROM, and format /system then flashing a new ROM has different result.
Flashing a new rom (unofficially - e.g Custom Roms via ClockworkMod), will NOT wipe data automatically. BUT it is highly recommended to wipe data before flashing a new rom. Some roms won't require that like coming from a CyanogenMod nightly to another. On the other hand, some roms will not work whatsoever unless the data is wiped before flashing.
I always backup currant rom, and wipe all data. Fix it right the first time! lol
I just do a factory reset, wipe cache and dalvik, then flash the rom straight. Would you be kind enough to tell me what difference is there between flashing rom straight and format system before flashing rom?
After installing I've been stuck at the MIUI_US united World wide splash screen for the past 20minutes.
Sounds like a bootloop. Did you wipe data/factory reset, wipe cache, wipe dalvik, fix permissions and (if you flashed another kernel) flash the kernel cleaning script first?
If not, do all that stuff. I flashed MIUI yesterday without issues.
if you can load into CWR goto Mounts Menu Format Data, Datadata, System, Cache, the goto advanced Wipe Dalvik. Now install Miui. and Fix permissions then reboot.
if not revert to stock via odin/heim and follow the steps above after flashing CWR.
Omg omg omg.. pleeeease someone help me.. I tired flashing a rom (phone already rooted and using cwm 5) for the fifth time and it's now stuck in startup on android (in white letters). I wiped system cache dalvik but nothing... what else could I try?
Which ROM are you using?
Try flashing again, and remember to read the instructions very carefully.
Wipe data/factory reset, wipe the cache (although that should be done when you factory reset) and the dalvik cache.
If it still fails, restore your previous backup (you did make one right? It's, like, almost necessary to backup your current ROM with CWM before doing anything, even if it's just wiping the dalvik cache. It's ESPECIALLY necessary to do one before flashing a ROM).
If all else fails, flash a new firmware using ODIN.
Thanks for the quick reply but I managed to fix it already.. I am awesome *big smiles*
You are awesome. Great job.
hello
my phone is sgs2 i9100
i have flashed my phone with odin several times, however i have a few questions.
when i flash a new firmware with odin i usually wipe my device and cache partition before, just in case, but even so, after i flash, my previous wallpaper remains, why is that?..could it be that some old data remained?..
the other question is about wiping dalvik cache, i know it is not needed when flashing with odin, but the last time i used that option my device went into bootloop, if i clear dalvik cache without flashing new firmware, is that normal that my device will get into bootloops?, and should i clear dalvik cache every now and then to speed up my device?
and is clearing dalvik cache is dangerous?..
if i am stuck in bootloop is there an easy way out without flashing again?
and one last question,
i prefer odin when flashing a firmware, rather then cwm, where can i find .tar custom firmwares and not .zip wich require to be flashed with cwm.
these question may have been answered before but i couldnt find them, so all help is greatly appreciated.
Oxnos said:
hello
my phone is sgs2 i9100
i have flashed my phone with odin several times, however i have a few questions.
when i flash a new firmware with odin i usually wipe my device and cache partition before, just in case, but even so, after i flash, my previous wallpaper remains, why is that?..could it be that some old data remained?..
the other question is about wiping dalvik cache, i know it is not needed when flashing with odin, but the last time i used that option my device went into bootloop, if i clear dalvik cache without flashing new firmware, is that normal that my device will get into bootloops?, and should i clear dalvik cache every now and then to speed up my device?
and is clearing dalvik cache is dangerous?..
if i am stuck in bootloop is there an easy way out without flashing again?
and one last question,
i prefer odin when flashing a firmware, rather then cwm, where can i find .tar custom firmwares and not .zip wich require to be flashed with cwm.
these question may have been answered before but i couldnt find them, so all help is greatly appreciated.
Click to expand...
Click to collapse
Hey mate,
clearing Dalvik Cache isn't dangerous because it's a kind of Prefetch folder from
Windows. So it's there to have some data from installed apps, but often hold it
after uninstall etc.... So don't be worry, u can clear it if u want
Hey mate!
Getting out of bootloop without reflash isn't really possible at most time.
U can try to do a factory reset and hope that system can boot then.
Odin flashable Firmware here:
http://forum.xda-developers.com/showthread.php?t=1075278
Odin Flashable Rom would be for example:
http://forum.xda-developers.com/showthread.php?t=1334124
A factory reset is not a really full wipe... it's like throwing icons in trash bin,
but to delete really u have to clear the trash bin.
So do the following for Full wipe an go in CWM to:
- wipe factory reset
- wipe cache partition
- Advanced: wipe dalvik & wipe battery stats
- mount and storage: format data, format system & format cache
Hope I didn't forget anything of ur points and could help a bit
CHEERS
You could also try the thread - if you have a bootloop?! !? DOH
Hello. I have backed up my stock rom and would like to flash a new custom rom. Team Win Recovery is all new to me as I used clockwork recovery and Amon RA on my old evo 4g. Before I flash a new rom, I know I'm supposed to wipe cache and dalvik, but do I also wipe system? Thank you for your help in advance.
If you're flashing a different ROM all together, then I usually do Factory Reset, Cache, Dalvik Cache. (in that order)
I don't know that the order matters, it's just my way of doing it, and I've never had any problems.
Wipe Menu
FattySparks said:
If you're flashing a different ROM all together, then I usually do Factory Reset, Cache, Dalvik Cache. (in that order)
I don't know that the order matters, it's just my way of doing it, and I've never had any problems.
Click to expand...
Click to collapse
Thanks for your quick response. Gladly appreciate it! But there's also an option in the wipe menu to wipe "system". In the wipe menu, there's: cache, dalvik cache, factory reset, battery stats, rotation, system. I wiped cache, dalvik and battery, anything else I neeed to wipe before I install a custom rom? In clockwork recovery, all I used to do is wipe data, cache and dalvik.
WilDip said:
Hello. I have backed up my stock rom and would like to flash a new custom rom. Team Win Recovery is all new to me as I used clockwork recovery and Amon RA on my old evo 4g. Before I flash a new rom, I know I'm supposed to wipe cache and dalvik, but do I also wipe system? Thank you for your help in advance.
Click to expand...
Click to collapse
Yes, when flashing a fresh ROM wipe EVERYTHING, including system. I usually wipe a few times just to make sure I'm starting fresh. I haven't used this super wipe but you can also check this thread
http://forum.xda-developers.com/showthread.php?t=1700211
Edit: I don't usually worry with wiping battery stats or rotation
Sent from my ELTE using Tapatalk 2
Got It
Thank you. I wiped everything and performed a factory reset.
You don't need to wipe system. Any decent rom out there will wipe the system for you before the rom flashes.
If I'm not mistaken, I believe that the factory reset wipes system anyway.
No factory reset does not wipe system. Also do not use super wipe zips. They are bad for you
sent from my EVO LTE
FattySparks said:
If I'm not mistaken, I believe that the factory reset wipes system anyway.
Click to expand...
Click to collapse
Factory reset wipes the data partition. It does the same thing as the factory reset within the phone settings. If you wipe system, it completely wipes out the OS, and there will be nothing to boot. Of course you can still get back to recovery. When you flash a rom, by default it should wipe the system for you and replace the system with the rom you are flashing. There may be a case where you are flashing an incremental upgrade, which will not wipe the system.
The reason you do a factory reset (data wipe) when flashing between roms is because settings and other stuff that was saved on the data partition may not be compatible with the rom and cause issues.
Spyderekz said:
No factory reset does not wipe system. Also do not use super wipe zips. They are bad for you
sent from my EVO LTE
Click to expand...
Click to collapse
Based on what?
Based on what developers have said. Super wipe originated from a CWM issue back on the EVO 4G and people never seemed to of forgotten.
sent from my EVO LTE
Spyderekz said:
Based on what developers have said. Super wipe originated from a CWM issue back on the EVO 4G and people never seemed to of forgotten.
sent from my EVO LTE
Click to expand...
Click to collapse
The issue was with cwm not superwipe. The superwipe created for this device works fine.
the issue was with cwm, the superwipe was made to combat that issue. a good dev will set his rom to wipe system. all a user has to do is factory reset in recovery. Superwipe is a unnecessary step and could be bad for the phone if its corrupted or the person who made it did it wrong.
really great info, thanks guys!
timtlm said:
Factory reset wipes the data partition. It does the same thing as the factory reset within the phone settings. If you wipe system, it completely wipes out the OS, and there will be nothing to boot. Of course you can still get back to recovery. When you flash a rom, by default it should wipe the system for you and replace the system with the rom you are flashing. There may be a case where you are flashing an incremental upgrade, which will not wipe the system.
The reason you do a factory reset (data wipe) when flashing between roms is because settings and other stuff that was saved on the data partition may not be compatible with the rom and cause issues.
Click to expand...
Click to collapse
So if i wipe the system, i can still get back to recocery?
sanyialo said:
So if i wipe the system, i can still get back to recocery?
Click to expand...
Click to collapse
Yes. A system wipe doesn't affect recovery. It just wipes the system partition on your phone. The recovery partition remains unaffected.
FattySparks said:
If you're flashing a different ROM all together, then I usually do Factory Reset, Cache, Dalvik Cache. (in that order)
I don't know that the order matters, it's just my way of doing it, and I've never had any problems.
Click to expand...
Click to collapse
Would i need to wipe system before restoring stock rom using twrp..?
hey i have wiped my system to flash cm unofficial rom in my galaxy a8 but i forgot to take backup and i am finding error while flashing tht rom. whn i try to reboot it shows no os wht to do now is there any way to recover or any other way so tht i can get my phone started plzzzz hlp
I haye advance wipe my galaxy s6 edge
now what can i do?
---------- Post added at 09:35 AM ---------- Previous post was at 09:28 AM ----------
Raheem1 said:
I have advance wipe my samsung galaxy s6 edge and not install new rom at that time now my phone not restarting
what can i do?
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