Develop Bugs

[Q] Now CM 10, 4.1.2 going to 4.2.2. How easy to go back?

I've been running CM 10, 4.1.2, on Verizon gn. Works fine.
But I can't leave well enough alone, and want to try 4.2.2.
That should be easy right, just flash the recent CM 10.1. No cache wiping. Right?
But if I do that and I don't like it. how do I go back? Is it as simple as just flashing CM 10?
Also, I have Ti backup. The backup folder is sdcard/TitaniumBackup. I've read that 4.2.2 creates /sdcard/0/ for data. Does this mean that my present backup will be deleted?
Any help appreciated.

Since you are migrating Android versions, I would recommend that you do a full wipe, so system, data, and cache (and restore apps from TiBu if you must). You can do a nandroid backup from recovery; if you don't like 4.2 just restore it. When restoring a nandroid backup everything will be exactly the same.

seandarcy said:
Also, I have Ti backup. The backup folder is sdcard/TitaniumBackup. I've read that 4.2.2 creates /sdcard/0/ for data. Does this mean that my present backup will be deleted?
Click to expand...
Click to collapse
I just upgraded from 4.1.2 to 4.2.2 and had the same concern about being able to go back if I had problems and knowing that the partitioning of internal storage would be changed.
I recently got my GN back from Samsung after getting the screen replaced. Before sending it off, I totally wiped and reset the phone to stock. I made sure I did a full Ti backup first, then a Nandroid backup, and finally copied the entire contents of internal storage via "adb pull" to my desktop computer. When I got the phone back, I reversed the process and was able to restore the phone entirely to where it was before the wipe.
I did the same operation before upgrading to 4.2.2, without wiping the phone. So if I'd have wanted to go back to 4.1.2, I'd have wiped the phone, including internal storage, and restored as described above. I'm pretty confident that this would have removed the new partitioning from 4.2.2 and reset it to where it was before the 4.2.2 upgrade.

Sorry to be dense, but...
So I do a nandroid backup from TWRP 2.4.4.0, system, data and cache
From TWRP flash the CM 4.2.2.
Do nandroid restore from TWRP?
Flash gapps, restore apps from TiBu.
Now if want to go back to 4.1.2:
Flash 4.1.2, wipe system data cache.
Flash gapps, restore apps from TiBu
Do I have this correct?

Nandroid the entire thing from TWRP, wipe system, data and cache from TWRP, flash CM10.1 and gapps from TWRP, restore apps from TiBu in ROM. If you don't like it just restore the nandroid from TWRP. TiBu only restores apps, nandroid restores everything: ROM, account, system settings, apps, etc.

The only extra thing I referred to was making a full copy of your phone's internal storage to your computer using "adb pull". This would allow you to wipe the internal storage and restore it, in case the partitioning change from "/storage/sdcard0" to "/storage/emulated/0" needed to be removed. But if TWRP's nandroid backup and restore takes care of this, this step isn't necessary.

How easy? Dead easy.
Sent from my Nexus

S4 wipe data internal or external etc

Helping my aunt do her phone to add google edition rom 4.2.2 i know how to root and install cwm but I know I need to transfer the rom do I need to transfer it on sd card because wipe data factory reset will delete all internal storage? And using that rom do I need to flash the tmobile kernel?

You need to flash the T-Mobile kernel, if you want to put the ROM on the internal SD card simply flash it first then wipe.
Sent from my SGH-M919 using Tapatalk 4 Beta

androiddownloader said:
Helping my aunt do her phone to add google edition rom 4.2.2 i know how to root and install cwm but I know I need to transfer the rom do I need to transfer it on sd card because wipe data factory reset will delete all internal storage? And using that rom do I need to flash the tmobile kernel?
Click to expand...
Click to collapse
It doesn't matter whether you put the ROM zip on the external SD card or the internal memory. Before you flash a ROM you want to wipe cache, dalvik, data, and system.. not after. Wiping those partitions won't touch your internal storage; though it is true that if you want a clean slate after flashing the GE4.2.2, you could go through the steps, then wipe internal storage only AFTER the flash.

tonytien said:
You need to flash the T-Mobile kernel, if you want to put the ROM on the internal SD card simply flash it first then wipe.
Sent from my SGH-M919 using Tapatalk 4 Beta
Click to expand...
Click to collapse
lordcheeto03 said:
It doesn't matter whether you put the ROM zip on the external SD card or the internal memory. Before you flash a ROM you want to wipe cache, dalvik, data, and system.. not after. Wiping those partitions won't touch your internal storage; though it is true that if you want a clean slate after flashing the GE4.2.2, you could go through the steps, then wipe internal storage only AFTER the flash.
Click to expand...
Click to collapse
Can you link to me the tmobile kernel I want to make sure I get the right one so I have no problems and
it's only the ge edition 4.2.2 and 4,3 needs tmobile kernel right but the rest don't?
and wipe data factory reset deletes internal right?
So flash first then wipe data factory reset?
Sorry for the excessive questions I'm only used to doing my lg optimus

Download the Rom you want to flash.
If it is not for the SGH M919 (T Mobile S4), you will need to also download ANY SGH-M919 Kernel.
Cut out the middle man and just grab a GE rom from the T Mobile Development Thread.
(I recommend this one):
http://forum.xda-developers.com/showthread.php?p=43635198#post43635198
Throw the rom onto your external SD.
I recommend wiping everything for a clean slate, especially because you are changing everything about the phone, (data, factory reset, caches, internal, system).
This rom specifically gives you a nice little Aroma (or customization) while flashing the rom onto the phone.
Hope this helps.
Sent from my SGH-M919 using xda premium

androiddownloader said:
Can you link to me the tmobile kernel I want to make sure I get the right one so I have no problems and
it's only the ge edition 4.2.2 and 4,3 needs tmobile kernel right but the rest don't?
and wipe data factory reset deletes internal right?
So flash first then wipe data factory reset?
Sorry for the excessive questions I'm only used to doing my lg optimus
Click to expand...
Click to collapse
T-Mobile kernels are in the Original Android Development section here. And no, it's not JUST the 4.2.2 and 4.3 needing TMO kernels; it's ANY Galaxy S4 ROM you flash outside of the T-Mobile development section. Best way to remember, if you download it from the T-Mobile section, no need to flash a kernel. If you download the ROM from any other S4 section, you WILL need a T-Mobile kernel. Also worth noting is that there are kernels for TouchWiz and AOSP/CM. A TouchWiz kernel will not work on AOSP/CM and vice versa. The GE 4.2.2, having the TouchWiz framework, can use any of the TouchWiz kernels here (not AOSP, also useless information if you d/l from the TMO dev section); but I won't comment on what kernels the 4.3 can use as I'm not exactly sure.
And as for what to wipe, it depends on what recovery you're using; I haven't used CWM in almost a year, so if you use CWM my recommendations may be a little off. I've used TWRP ever since it was ported to my previous device, so my directions are from using TWRP; the only time internal storage will be wiped is if you select it from the advanced wipe menu. None of the other options (dalvik cache, system, data, cache) will wipe your internal storage. If you are simply changing between different TouchWiz ROMs, there is no need to wipe data. The data partition should work fine between all TouchWiz ROMs. If I'm switching between TW ROMs, the order I use is to: wipe dalvik, system, and cache at one time; then flash the ROM and, if the ROM isn't for the M919, flash kernel. The only difference in my method when moving from TW to CM or vice versa is that I format data also. I haven't experienced too many problems saving data between ROMs of the same type; i.e. ParanoidAndroid and CM, or different versions of TouchWiz... but if you're moving from a CM variant to a TouchWiz ROM, it's really a good idea to go ahead and wipe your data partition.
And as always, if you experience problems in any ROM you flash, try wiping everything (dalvik, system, data, and cache) and trying from a clean slate. Another thing to keep in mind, if you use TiBu to backup your apps and data, there can be problems if using app data between CM and TW. When you restore, be sure to check App only and not App+data. I definitely wouldn't recommend interchanging app data between 4.3 and ANY version of 4.2.2.

Help flashing

I'd like to flash cloudy g3 but I'm not sure how to restore data into it, I have a nandroid backup with twrp, I used the preset backup and compressed the file on a sd card. Please help.

AryG15 said:
I'd like to flash cloudy g3 but I'm not sure how to restore data into it, I have a nandroid backup with twrp, I used the preset backup and compressed the file on a sd card. Please help.
Click to expand...
Click to collapse
by restore data you mean to restore data from stock rom? I don't think that would be possible every time you flash a new rom you have to do a fully wipe, or you'll get a bootloop.

I mean as in all my app data and photos etc

tietganFTW said:
by restore data you mean to restore data from stock rom? I don't think that would be possible every time you flash a new rom you have to do a fully wipe, or you'll get a bootloop.
Click to expand...
Click to collapse
I mean as in app data and photos and stuff

AryG15 said:
I mean as in app data and photos and stuff
Click to expand...
Click to collapse
you cannot restore any data from /data partition (a.k.a. app data, etc) because it will cause a bootloop if you're coming from another rom. Internal storage and external sdcard data can be restored if you have a backup on your computer. In fact it wouldn't even be wiped by twrp in the first place.

AryG15 said:
I mean as in all my app data and photos etc
Click to expand...
Click to collapse
Internal memory won't be formatted. So your data will stay intact. For backuping and restoring apps you can use titanium backup. It would restore the data completely.

What do you mean?

I don't get what you mean by internal memory won't go

[Q's] Custom ROM flashing

Hey,
My LG G3 currently running Android 5.0 (V21-SEA-XX), rooted, lastest TWRP flashed with AutoRec.
I want to CLEAN flash nightly CM13 and I have few questions:
1. After downloading ROM and GApps, where should I put them? Internal memory/SD card?
2. What should I backup in TWRP to get full backup? and where should I move the backup to before wiping?
3. What do I need to wipe to get the cleanest install possible? I own my G3 for over 2 years and it has a lot of junk on it. (of course without wiping the SD card)
4. Anything special you recommend me to backup with Titanium Backup?
5. Do I need to flash Modem? (My device is running 13.00002)

ToMeRv32 said:
Hey,
My LG G3 currently running Android 5.0 (V21-SEA-XX), rooted, lastest TWRP flashed with AutoRec.
I want to CLEAN flash nightly CM13 and I have few questions:
1. After downloading ROM and GApps, where should I put them? Internal memory/SD card?
2. What should I backup in TWRP to get full backup? and where should I move the backup to before wiping?
3. What do I need to wipe to get the cleanest install possible? I own my G3 for over 2 years and it has a lot of junk on it. (of course without wiping the SD card)
4. Anything special you recommend me to backup with Titanium Backup?
5. Do I need to flash Modem? (My device is running 13.00002)
Click to expand...
Click to collapse
1. You can put them wherever you want. In internal or sd. If you are wiping internal, don't put it there
2. You can do a full backup using TWRP if you want a full backup of your current Rom, kernal, apps and so on. But it's not necessarily needed of you're sure that you don't mess things up.
3. A normal wipe(dalvik, cache and system) on TWRP is quite enough for installation of a rom. But if you want to wipe internal you can do that as well.
4. If you're not doing a TWRP backup, you can backup your apps using titanium backup. This is what I normally do, because I only usually need a backup of my apps and data, and not of the current rom(because we can reflash it later of needed).
5. You need to flash a 21B modem. Usually changing from stock based to cm roms requires change in modem.
And one more thing, you're just flashing a rom after 2 years [emoji15]
G3 D855---ROM : #DU ---Xposed

Thanks.
Few questions -
1. Why not flash 21C modem?
2. Can you tell me exactly what do I need to wipe in TWRP to wipe everything except SD card?
System, Dalvik, Cache, Internal Storage.. Data too?

TWRP Restore Issue

Hi guys,
I seem to have this problem where my nandroid backup from TWRP won't boot. I can only get it to boot after flashing the Rom over again after the store (this doesn't erase the data and all my file are still there, I just have to make sure I'm flashing the same Rom version as was part of the backup to avoid issues . But I was wondering if there is something else I should be doing here. I've used TWRP in the past and was just able to back up and restore no problem.
When I back up I make sure my system partition is mounted and I usually backup the default selections (boot/data/system, EFS) . My feeling is somehow the boot partition gets corrupted and won't allow the phone to continue booting, but I'm not sure why?
Any ideas? I'm using TWRP version 3.0.2-0. This happens when restoring nandroid for any rom (so far tried with oxygen/hydrogen/miui and cm14).
Thanks in advance.

I have question regarding TWRP. I always had a phone with an external SD card. This will be my first phone with no external memory. When I install a new ROM I always wiped internal, factory reset and cleared cache. Now can't do that anymore cause that will wipe my internal card and lose my nandroid backup. What are you guys wiping right before you install a ROM?

borijess said:
I have question regarding TWRP. I always had a phone with an external SD card. This will be my first phone with no external memory. When I install a new ROM I always wiped internal, factory reset and cleared cache. Now can't do that anymore cause that will wipe my internal card and lose my nandroid backup. What are you guys wiping right before you install a ROM?
Click to expand...
Click to collapse
Standard factory reset on TWRP will erase data, cache and Calvin cache without wiping internal SD card. That's what most people use.

piotrus22 said:
Hi guys,
I seem to have this problem where my nandroid backup from TWRP won't boot. I can only get it to boot after flashing the Rom over again after the store (this doesn't erase the data and all my file are still there, I just have to make sure I'm flashing the same Rom version as was part of the backup to avoid issues . But I was wondering if there is something else I should be doing here. I've used TWRP in the past and was just able to back up and restore no problem.
When I back up I make sure my system partition is mounted and I usually backup the default selections (boot/data/system, EFS) . My feeling is somehow the boot partition gets corrupted and won't allow the phone to continue booting, but I'm not sure why?
Any ideas? I'm using TWRP version 3.0.2-0. This happens when restoring nandroid for any rom (so far tried with oxygen/hydrogen/miui and cm14).
Thanks in advance.
Click to expand...
Click to collapse
I don't have any solution for you but I can certainly concur. I've seen this behaviour as well but not as consistently as what you are describing. About 1/3rd of the time my restores don't work as you mentioned and I have to dirty flash the rom to get it to boot. Sometimes the restore even errors out while restoring the System partition in which case I just dirty flash. This is like my 9th or so Android device since Samsung released the SGS1 in whatever year that was and this is the first phone I've ever had this problem with. On previous phones it would happen rarely but nothing like it does on the OP3.
---------- Post added at 11:01 AM ---------- Previous post was at 10:58 AM ----------
borijess said:
I have question regarding TWRP. I always had a phone with an external SD card. This will be my first phone with no external memory. When I install a new ROM I always wiped internal, factory reset and cleared cache. Now can't do that anymore cause that will wipe my internal card and lose my nandroid backup. What are you guys wiping right before you install a ROM?
Click to expand...
Click to collapse
You can either not wipe internal storage (that is what I do usually) or you can buy an OTG adapter. I think TWRP supports it for our device. You can always copy off your backups via USB then wipe internal then copy your backups back too I think.

Did you for once try wiping the complete device after backing up nans on external storage and thn trying restoring? That would make a difference

Dr-Hack said:
Did you for once try wiping the complete device after backing up nans on external storage and thn trying restoring? That would make a difference
Click to expand...
Click to collapse
What?

piotrus22 said:
What?
Click to expand...
Click to collapse
I think he is asking to do below procedure -
1.Copy your nandroid backup and other imp stuff to computer
2.boot into TWRP
3.wipe all partitions including internal storage
4.copy nandroid backup to phone
5.restore backup through TWRP

Did you mount system to restore backup?

null0seven said:
Did you mount system to restore backup?
Click to expand...
Click to collapse
Yep of course.

JumboMan said:
I think he is asking to do below procedure -
1.Copy your nandroid backup and other imp stuff to computer
2.boot into TWRP
3.wipe all partitions including internal storage
4.copy nandroid backup to phone
5.restore backup through TWRP
Click to expand...
Click to collapse
OK. Have not tried this, why would this work and fix my problem? Do I only have to do it once and then all subsequent restores would be fine? Is it a problem with my TWRP? Phone?

piotrus22 said:
OK. Have not tried this, why would this work and fix my problem? Do I only have to do it once and then all subsequent restores would be fine? Is it a problem with my TWRP? Phone?
Click to expand...
Click to collapse
its one time procedure. Subsequent restore will be fine.
May be different versions of TWRP will help you with this problem

is this issue had been resolved? because i have also the same problem.. whats the fix for this?

piotrus22 said:
OK. Have not tried this, why would this work and fix my problem? Do I only have to do it once and then all subsequent restores would be fine? Is it a problem with my TWRP? Phone?
Click to expand...
Click to collapse
How did you fix your problem? I cant restore my backup also..
it says restore complete but stock in boot logo after... any fix?

toto_vanir said:
How did you fix your problem? I cant restore my backup also..
it says restore complete but stock in boot logo after... any fix?
Click to expand...
Click to collapse
Hey man. No I never fixed it. Just flash your Rom over it and it should boot fine.