Hello there, i installed a rom on my galaxy s4.. But kushan put a newer update of that rom.. what should i do? backup apps and just install the new rom above the old one?
That is called a dirty flash, or dirty installation.
You can do that. But there is a chance of problems.
A clean flash (wipe data, system, cache and dalvik cache) is generally recommended to avoid problems.
Related
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.
Sorry if this is a noob question, but currently my phone is running on the alliance rom for t-mobile (here: http://forum.xda-developers.com/showthread.php?t=2748569). When updating to the current version, is it necessary or advisable to do the whole factory reset, wipe dalvik and cache shenanigans, or can I just install the rom by flashing it over the current install?
ichisaur said:
Sorry if this is a noob question, but currently my phone is running on the alliance rom for t-mobile (here: http://forum.xda-developers.com/showthread.php?t=2748569). When updating to the current version, is it necessary or advisable to do the whole factory reset, wipe dalvik and cache shenanigans, or can I just install the rom by flashing it over the current install?
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Ususaly i wipe the cache and dalvik cache and then flash the new rom.
Hello,
actually I'm using a SGS4 I9505 with cm-12-20150304-NIGHTLY-jfltexx and CWM 6.0.5.1.
I've tried to flash several TW Lollipop firmware wich i found in the I9505 forum:
1. Kushan+Touchwiz+Lollipop+Lite+Rom+v.1.2
2. S4_Echoev42_EchoePop2_020315
3. OA7-2.1F
4. XXUHA07-v2.01
Before flashing any oft this firmwares i made a factory reset, wiped both caches and installed the modem Firmware via Odin.
After flashing firmware # 1 and 2 my phone was stuc in a bootloop (only Samsung Galaxy S4 Logo appears).
Flashing firmware #3 and 4 fails and cwm reports error 7.
Flashing cm12 afterwards isn't a problem and runs fine.
I think the wipe fails or doesn't work properly. Is it enougth to select factory reset in cwm and wipe the dalvik cache manualy?
What can I do?
With besteht regard
Mirko (NemesisMF)
What if it is a recovery problem?
Thought about that too.
Should i try twrp or philz?
I switched to Philz Recovery and flashed S4 Echoe Rom v42 without any Problems.
CWM seems to have a problem to falsh TW Lollipop images ower an existing CM12 an the I9505.
You need to do full wipe not just cache.
ranger4740 said:
You need to do full wipe not just cache.
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As I wrote above I did a factory reset before flashing and wiped the caches with cwm. If that is not enougth it would be nice to explain what else I have to wipe or post a link.
While using philz recovery the factory reset for clean system is enougth and the new System is working fine.
Factory wipe is not full wipe, you need to do a full wipe as in format to install new rom, phillz recovery has this feature can't remember exactly where, I think its under advanced.
Just have a look in the sub menus.
Just to explain it better when you do a full wipe it deletes every part of the existing
Rom including the system, data and cache and some other stuff completely removing the android operating system, so unless the rom you install does a wipe before install parts of the existing system will remain and can cause boot issues. For example as you've already discovered you are trying to install a tw rom over an existing cyanogenmod 12 installation which Will cause it to hang on boot.
NemesisMF said:
As I wrote above I did a factory reset before flashing and wiped the caches with cwm. If that is not enougth it would be nice to explain what else I have to wipe or post a link.
While using philz recovery the factory reset for clean system is enougth and the new System is working fine.
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Click to collapse
Do you mean a factory reset from within Android itself? If so, then that's a complete obsolete step. When before flashing a rom you should perform a factory reset, then they always mean a full wipe from the recovery. You need to do a full wipe from the recovery. That means the /system partition is being wiped. You will see it in the screen during the wipe if it wipes /system.
But it also could have been a problem of CWM. I don't think it is being updated anymore, so better use TWRP or Philz.
Hi,
I've recently done a succesful flash of Blisspop after a full wipe.
Now I want to update, but I don't want to do a full wipe. Simply installing the zip on-top gives a permanent booting screen. Can you update without starting from scratch?
Did you wipe cache & dalvik after flashing updated zip?
I did not. Is that the only required extra step? And will I lose data if I do so?
Kalenden said:
I did not. Is that the only required extra step? And will I lose data if I do so?
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Click to collapse
No, you only lose data when you wipe the data partition
In recovery, you'll see different named partitions, cache, dalvik cache, system, data, etc etc
If you wipe System, you wipe the ROM
If you wipe Data, you wipe your user data
Caches are just temp partitions, safe to wipe any time, only side effect is a longer first boot as Android needs to re-cache everything
But yes, you do need to wipe the caches when updating to a newer version of the same ROM/Droid version, and no you won't lose your data
Here's how I do it:
Wipe System
Wipe Caches
Flash new ROM
Flash new Gapps
Flash SuperSU if needed
Wipe Caches again
Reboot
Result = New ROM with no loss of data
That's a clean flash, a dirty flash is how you did it without wiping System
If you are moving to a newer version of android, or a different ROM, wiping data becomes more necessary, especially if the move is to an older version of droid
Thanks. I'll try it out.
is there a way to update ROM instead of doing fresh install?
I have unofficial XenonHD for S7 edge
https://forum.xda-developers.com/s7-edge/development/rom-xenonhd-t3544403
And I have Feb 25 ROM and dev recently released March 5th ROM, which fixes number of things
I need help with updating ROM but it doesn't support OTA because it's unofficial version.
Does anyone know how to update this ROM without resetting anything or staring fresh?
for updating the developer has put in this comment.
. Make a full wipe (system, data, cache, dalvik-cache). If you're updating ROM or have other 7.1.1 already you may not need to wipe data (just wipe system, cache, dalvik-cache)
try doing it without wiping the data as per the developer instructions but make sure you have a back up available in case of issues.
Cosmic Blue said:
for updating the developer has put in this comment.
. Make a full wipe (system, data, cache, dalvik-cache). If you're updating ROM or have other 7.1.1 already you may not need to wipe data (just wipe system, cache, dalvik-cache)
try doing it without wiping the data as per the developer instructions but make sure you have a back up available in case of issues.
Click to expand...
Click to collapse
Ahh thank you.
Do u think I need to reinstall GAPP softer flashing updating ROM?