My basic question is can I repeatedly reflash the same ROM to my Epic without wiping data between flashes?
I flashed a ROM and then manually flashed a number of add-ons and optional installs from other ROMs. My phone is now in a state that I don't like. I thought I did a nandroid backup after the initial ROM flash, but I didn't. I'd like to just reflash the same ROM that I already have on my phone, hopefully just wiping cache + dalvik first. I'd rather not wipe data and go through all that again if I don't have to. Is this safe to do?
Yes its safe. Only reason they say to wipe is going from one rom to other rom u may get some probs.
Sent from my Epic 4G
Sorry for the silly question. I'm on the go and I don't have my laptop. I need to know how to do a full wipe. Either from terminal or recovery. I am using recovery version 3.0.0.2. But when I do the wipe, and flash a new rom, somehow the wifi settings along with wallpaper and some other things are saved and I don't want them to be. I want a complete wipe...
Btw. I did uncheck the box for backing up settings to Google servers and its still restoring things. Getting frustrating.
Sent from my HTC Glacier using XDA App
on the clockwork 3.0 just wipe data/factory reset and it should be fine. Keep in mind though that 3.0 is only for gingerbread based roms such as CM7 or cm7 nightlies and I think there is another gingerbread floating around.
If you want to revert back to STOCK, or a 2.2 rom you can use rom manager to flash the 2.5 recovery. Then wipe data/factory, dalvik, cache, to flash a new rom. To revert back to 3.0 for a gingerbread rom just fastboot flash the 3.0 recovery
osugsxr said:
on the clockwork 3.0 just wipe data/factory reset and it should be fine. Keep in mind though that 3.0 is only for gingerbread based roms such as CM7 or cm7 nightlies and I think there is another gingerbread floating around.
If you want to revert back to STOCK, or a 2.2 rom you can use rom manager to flash the 2.5 recovery. Then wipe data/factory, dalvik, cache, to flash a new rom. To revert back to 3.0 for a gingerbread rom just fastboot flash the 3.0 recovery
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Wiping via ClockworkROM doesn't do a full wipe. I've encounter what the OP is talking about. I can wipe the factory ROM then go to flash a Cyanogen ROM and my wall paper sticks and some of various settings stick. Yes a factory reset and a Cache Clean, and Dav Cache clean and it will still stick.
He is talking about 100% fresh clean phone like you bought it brand new.
that's exactly right... 100 % fresh clean cm7 is what i'm looking for... but i can't seem to get a full wipe... keeps restoring some settings
Hey guys
I had started to use nightly builds. My question is should I have to wipe factory n Cache?
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Nope, if you continue to use the nightlies, just wipe dalvik cache,
If you come from different rom, just wipe data and cache and dalvik cache.
Once you are on the nightlies you never wipe anything. Don't listen to any nonsense about caches and dalviks just go to recovery, flash nightly, reboot!
Sent from my Nexus S using XDA App
Thank you.. do I have to wipe if I'm switching to different rom of same version?
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You're losing no data wiping cache and dalvik, why not do it then, it saves you from trouble.
rentaric said:
You're losing no data wiping cache and dalvik, why not do it then, it saves you from trouble.
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Because it doesn't "save you from trouble." But I'm not going to argue about it. The OP asked if he had to wipe when upgrading nightlies and the answer is No.
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Plz tel about this... Toll then do I have to wipe if I'm flashing different rom of same android version!?
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ancilary said:
Plz tel about this... Toll then do I have to wipe if I'm flashing different rom of same android version!?
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Yes for different roms you must factory reset.
Sent from my Nexus S using XDA App
rentaric said:
You're losing no data wiping cache and dalvik, why not do it then, it saves you from trouble.
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Correct.
matt2053 said:
Because it doesn't "save you from trouble." But I'm not going to argue about it. The OP asked if he had to wipe when upgrading nightlies and the answer is No.
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You are so wrong. Of course he needs to wipe Dalvik and Cache even if he installs another nightly. Its because the new nighlties bring new apps versions, or new kernel changes. Deleting Dalvik and cache forces the Android to reload the Dalvik cache for all the apps. Also, it saves you from trouble of incompatibility or FC's.
ancilary said:
Plz tel about this... Toll then do I have to wipe if I'm flashing different rom of same android version!?
Sent from my Nexus S using XDA Premium App
Click to expand...
Click to collapse
Different ROM same Android - wipe Data, Dalvik, Cache.
Same ROM same Android - wipe Dalvik, Cache.
brainmaster said:
Correct.
You are so wrong. Of course he needs to wipe Dalvik and Cache even if he installs another nightly. Its because the new nighlties bring new apps versions, or new kernel changes. Deleting Dalvik and cache forces the Android to reload the Dalvik cache for all the apps. Also, it saves you from trouble of incompatibility or FC's.
Different ROM same Android - wipe Data, Dalvik, Cache.
Same ROM same Android - wipe Dalvik, Cache.
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Well you can have your superstitions but there is no rational reason to manually wipe your cache or your dalvik cache when upgrading CM nightlies, and that comes straight from the developers of the ROM who are more knowledgeable than I am. None of the CM devs have EVER suggested it, and when asked, have said that it is not something that should be done. I will take their word over yours.
EDIT: This is the closest I think we will find to a definitive answer: http://review.cyanogenmod.com/#change,4933
So, CM development team does not suggest a wipe of dalvik or cache when upgrading. The nightly installation instructions do not mention wiping dalvik or cache. I personally have flashed several hundred nightlies over the last year and have never wiped cache or dalvik when upgrading. Many many other users have flashed hundreds of nightlies each and have not wiped cache or dalvik and have not had problems. There is no reason to do this action, it is completely pointless. It is like saying "you must have your phone pointing to the east when you boot." Sure maybe it does not hurt anything but we don't really need to keep spreading this superstition.
EDIT: In re-reading this I feel like my posts come across as disrespectful and/or antagonistic. I simply disagree with what was said and I feel I have good reason to. But the OP can read about both points of view and then try for himself and choose what works best for him.
CWM recovery was developed from CM7 devs. So why do you think that they've integrated or made a option to wipe dalvik if that is not needed?
Especially if installing another kernel, wiping Dalvik is a must.
But you are right, the OP can choose himself either he will do that or not.
I don't think that your post is disrespectful and/or antagonistic, you have just expressed your opinion. If we don't discus issues with each other we are not gonna make any progress on learning.
brainmaster said:
CWM recovery was developed from CM7 devs. So why do you think that they've integrated or made a option to wipe dalvik if that is not needed?
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There are lots of options in CWM recovery that are not needed when flashing
Like I said, in the link it is expressed very clearly that the developers of the ROM feel it is "completely pointless" (exact words) to wipe cache and dalvik when updating to newer CM build.
There are times when a user or developer might want to wipe cache or dalvik and so those options do exist. There are other partitions that a user or developer might want to format from time to time for various reasons as well. And the option to do those things is there in CWM recovery. But that does not mean they should be done every time, just because they are there.
In the link I posted, a submission was made to CM code to make it easier for users to wipe dalvik and cache and install a zip all in one command. The submission was rejected because the reviewers agreed that it was "completely pointless."
Why after so much time do you think "Wipe Dalvik Cache" is still obscurely placed in the "Advanced" menu of CWM Recovery? It would be very easy and simple to wipe cache and dalvik automatically when installing a ROM through CWM Recovery or at least put the option on the main page. Do you think that Koush just likes to give users a hard time? Do you think he wants it to be difficult for them to update their ROMs? I don't think so. I think he understand that it is an advanced function that can be useful in some circumstances but is not typically needed in 99% of cases.
The developers also note that the cache is invalidated via hashes automatically. So its basically auto wiped.
The only reason that I wipe is when the nightly contains a new kernel, dalvik should be wiped to eliminate possible problems.
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Disclaimer: I'm used to my old Evo 4G and use a triple wipe script built into my recovery (smelkus) whenever I flash a rom. It pretty much wipes everything.
For the Nexus 7, what needs to be wiped to flash a rom? I did a factory reset, wiped data, wiped cache, wiped system, wiped dalvik-cache, and then flashed a new rom, but I wasn't sure if all that was necessary. I'm using the latest TWRP recovery.
If I'm moving from one rom based on a jelly bean version to another based on the same version, am I ok?
Can I assume upgrading to a new version of the same rom that I don't have to wipe? (I know this one is rom specific, but in general.)
Can I leave data and will that retain my apps? Otherwise, I use Titanium Backup religiously on my Evo and now on my Nexus 7.
I searched within some of the rom instructions as well as the rooting guides, but didn't see anything specific as to what to wipe. Some threads seem to say just factory reset and maybe dalvik-cache.
Instructions with what to wipe usually come in the original post of each ROM. Usually the same ROM with different version only requires a cache wipe while moving between different ROM's requires a full wipe/reset + dalvik.
Worse comes to worse you try something and it doesn't boot and you get back into recovery and fix it.
Hi,
I mean, When it can be usefull to Wipe Cache and/or Dalvik or I don't know.. ^^ for example after flashing a new nightly, if it can make the phone faster.
or when it's totaly useless to wipe something,
it would be very cool, thanks
Actually full wiping is only necessary while switching roms. And dalvik wipe when installing mods or kernel updates (quarx). You can actually do dalvik wipes without any bad consequences-Android just generates the cache again
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