Develop Bugs

CM10 M2 Bootloop Gnex

Need some quick help here. I unlocked and rooted my gnex. I have done this several times before and with all my other android phones. As soon as I rooted it, I flashed the new 4.2 gapps package. Upon booting, the launcher would not respond and thusly I could not access my home screen or app drawer. I had to open my apps from the google now target on the lock screen. As I read more, I heard not to flash the 4.2 gapps unless you have flashed another rom.
So I went to chrome, dl'ed the cm10 m2 zip, went into rom manager and flashed the cm10 and 4.2 gapps again. Now upon booting, the cyanogenmod icon is bootlooping, and has been for the last ten minutes. I went back into recovery and tried the process again, this time wiping the cache and dalvik, to no avail...same bootloop.
Please help!

Install a stock ROM using fastboot.....
Beamed from my Maguro.

If it helps at all, it's a Verizon galaxy nexus. Please help! Also if it is at all possible to save pictures, please let me know. Wiping would be my last resort.
Thanks

Mach3.2 said:
Install a stock ROM using fastboot.....
Beamed from my Maguro.
Click to expand...
Click to collapse
Is there a way of flashing stock that does not require a wipe?
Also I did make a nandroid of the stock rooted rom, but for some reason, after flashing that, the cyanogenmod logo stilled appeared at boot...

swimman2867 said:
If it helps at all, it's a Verizon galaxy nexus. Please help! Also if it is at all possible to save pictures, please let me know. Wiping would be my last resort.
Thanks
Click to expand...
Click to collapse
U need to wipe cache/dalvik/factory reset/system(u need to do this every time before flashing a ROM) , do it like 3 times and re-flash ROM. Don't worry about ur photos, they r in the internal memory and u don't need to wipe it, so u won't lose them.
Sent from my Galaxy Nexus using xda premium

Which file did you flash? You could've used the 'maguro' (GSM) one instead of the 'toro' (Verizon) one

pr0xyw0rm said:
U need to wipe cache/dalvik/factory reset/system(u need to do this every time before flashing a ROM) , do it like 3 times and re-flash ROM. Don't worry about ur photos, they r in the internal memory and u don't need to wipe it, so u won't lose them.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
When you factory reset, the entire phone is wiped, no? And how can I factory reset from recovery?
EddyOS said:
Which file did you flash? You could've used the 'maguro' (GSM) one instead of the 'toro' (Verizon) one
Click to expand...
Click to collapse
I was sure to flash the toro file. I don't believe that is the problem.

swimman2867 said:
When you factory reset, the entire phone is wiped, no? And how can I factory reset from recovery?
.
Click to expand...
Click to collapse
Nope. Factory Reset doesn't wipe the internal SD. It should be located inside the wiping options(I'm using TWRP recovery). Anyways u should wipe cache/dalvik/factory reset/system before flashing a ROM not just factory reset.
Sent from my Galaxy Nexus using xda premium

adb pull /sdcard in recovery
download stock image from Google and flash
https://developers.google.com/android/nexus/images
fastboot oem lock

Got home from class, wiped cahce, dalvik, and data, flashed cm10 m2 and gapps 4.2. Everythings great and I still have my pics. Thanks guys
It was just taking that plunge of wiping data that was freaking me out. I had some pics that i absolutely could not lose, but after reading on it more, it makes sense that the wipe would not format the internal sd.
Thanks again!

swimman2867 said:
Got home from class, wiped cahce, dalvik, and data, flashed cm10 m2 and gapps 4.2. Everythings great and I still have my pics. Thanks guys
It was just taking that plunge of wiping data that was freaking me out. I had some pics that i absolutely could not lose, but after reading on it more, it makes sense that the wipe would not format the internal sd.
Thanks again!
Click to expand...
Click to collapse
U r welcome. I'm glad to hear that.
Sent from my Galaxy Nexus using xda premium

(Solved)

Hey guys, while doing a clean wipe on my phone I left my phone unattended while in recovery, I walked in the other room for a second and my 2 year old somehow managed to completely wipe out my phone, formatting my sd card.
I have acces to recovery but I cannot get the internal sd to mount or external to mount, I need you to help me flash anythiong so I can boot the phone back up.
I would appreciate any help!!

bdpyo said:
Hey guys, while doing a clean wipe on my phone I left my phone unattended while in recovery, I walked in the other room for a second and my 2 year old somehow managed to completely wipe out my phone, formatting my sd card.
I have acces to recovery but I cannot get the internal sd to mount or external to mount, I need you to help me flash anythiong so I can boot the phone back up.
I would appreciate any help!!
Click to expand...
Click to collapse
If you are using TWRP, sideload a ROM to it and flash that. I think even from CWM you can adb push a ROM to your internal memory. If all else fails, reboot to download mode and ODIN back to stock.

shoestar said:
If you are using TWRP, sideload a ROM to it and flash that. I think even from CWM you can adb push a ROM to your internal memory. If all else fails, reboot to download mode and ODIN back to stock.
Click to expand...
Click to collapse
thanks for the reply man, I dont know how to sideload a ROM, never down that before.

bdpyo said:
thanks for the reply man, I dont know how to sideload a ROM, never down that before.
Click to expand...
Click to collapse
Well, do you have TWRP or CWM?
For TWRP
For CWM

shoestar said:
Well, do you have TWRP or CWM?
For TWRP
For CWM
Click to expand...
Click to collapse
running ClockworkMod Recovery v6.0.1.4
Odin'ing a stock image/package may be a littler easier for me, im a complete novice when it comes to ADB..etc

Well I was able to what I think successfully use Odin to flash stock firmware. The only thing I question is that, I still have all of my pictures that were stored on the phones internal memory.
In stock 3e recovery I also have more options rather then just wipe/factory reset and clear cache....

You really should Google how to use adb, there are some great tutorials from XDA. Everyone is a nub at first. Lol.
Flashing stock doesn't wipe the internal memory, it just does the normal wipes and formats system.

shoestar said:
You really should Google how to use adb, there are some great tutorials from XDA. Everyone is a nub at first. Lol.
Flashing stock doesn't wipe the internal memory, it just does the normal wipes and formats system.
Click to expand...
Click to collapse
Ive dabbled with it owning my nexus s and s2 but feared i would do more damage then i could handle. Lol
So i used odin to get back but now currently running the jellybean update being that it dont wipe the internal memory if i had to retuen the phone for any reason would there still be a trace of root?
I uploaded all of my pictures then did a soft and hard reset...
Thanks again for your help!!
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

bdpyo said:
Ive dabbled with it owning my nexus s and s2 but feared i would do more damage then i could handle. Lol
So i used odin to get back but now currently running the jellybean update being that it dont wipe the internal memory if i had to retuen the phone for any reason would there still be a trace of root?
I uploaded all of my pictures then did a soft and hard reset...
Thanks again for your help!!
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Just boots into Download mode and see if the flash counter has been tripped.

shoestar said:
Just boots into Download mode and see if the flash counter has been tripped.
Click to expand...
Click to collapse
Yeah shows 1 count
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

[Q] Fail to flash any rom in my Note 2 sgh i317

Hello guys,
It's my first question to the forum. I hope you can give me a clue resolve this problem.
I bought a Note 2 SGH i317 some days ago.
It was my first root but with your trheads everything was ok (for some days).
I tried JediX, Custom Rom 4.2.5 and some other.
But after tried some custom roms, I noted that when I flash any rom the phone stucks on Samsung Galaxy Note II screen and I have to pull out the battery to turn off the phone.
I tried with many others roms and all did the same.
Later I realized that the flash process was very fast compared to the first ones, so I guess the flash proccess fails in some instance.
I returned to stock rom and root it again with same results.
I tried with CVM and TWRP.
I can restore some nandroid backups to get the phone working, but can't flash any rom now!
Do you have any suggestion?
Thanks in advance.

maztermdq said:
Hello guys,
It's my first question to the forum. I hope you can give me a clue resolve this problem.
I bought a Note 2 SGH i317 some days ago.
It was my first root but with your trheads everything was ok (for some days).
I tried JediX, Custom Rom 4.2.5 and some other.
But after tried some custom roms, I noted that when I flash any rom the phone stucks on Samsung Galaxy Note II screen and I have to pull out the battery to turn off the phone.
I tried with many others roms and all did the same.
Later I realized that the flash process was very fast compared to the first ones, so I guess the flash proccess fails in some instance.
I returned to stock rom and root it again with same results.
I tried with CVM and TWRP.
I can restore some nandroid backups to get the phone working, but can't flash any rom now!
Do you have any suggestion?
Thanks in advance.
Click to expand...
Click to collapse
Did you wipe the data/wipe the cache partition and clear the dalvik cache? I would start with those things.

CharliexCharger said:
Did you wipe the data/wipe the cache partition and clear the dalvik cache? I would start with those things.
Click to expand...
Click to collapse
Hi.
Yes. I did every step.
Sometimes I wipe both before and after flashing rom.
In some cases I format /system also.
I'm thinking in format some special partition/folder, but I don't know where to start or if it will works...

maztermdq said:
Hi.
Yes. I did every step.
Sometimes I wipe both before and after flashing rom.
In some cases I format /system also.
I'm thinking in format some special partition/folder, but I don't know where to start or if it will works...
Click to expand...
Click to collapse
That is weird. Did you root using Odin?

CharliexCharger said:
That is weird. Did you root using Odin?
Click to expand...
Click to collapse
I rooted it via Odin using Galaxy Note 2 Toolkit form here:
http://forum.xda-developers.com/showthread.php?t=1923956
with my specific tar file.

maztermdq said:
I rooted it via Odin using Galaxy Note 2 Toolkit form here:
http://forum.xda-developers.com/showthread.php?t=1923956
with my specific tar file.
Click to expand...
Click to collapse
Not sure what went wrong. I would search through the forums for anything similar to the issue that you're having. If all else fails I'd flash the stock firmware via Odin. Good luck!

CharliexCharger said:
Not sure what went wrong. I would search through the forums for anything similar to the issue that you're having. If all else fails I'd flash the stock firmware via Odin. Good luck!
Click to expand...
Click to collapse
Charlie,
To flash stock firmware is different form flash stock rom?
Must I search for a trhead to flash it?
Thank you!

maztermdq said:
Charlie,
To flash stock firmware is different form flash stock rom?
Must I search for a trhead to flash it?
Thank you!
Click to expand...
Click to collapse
Yes it is. You can find the stock here.
http://galaxynote2root.com/galaxy-note-2-stock-firmwares/

If flashing stock rom doesn't help, your internal memory might be corrupted, and might need to format it through recovery.
It's not a sure thing but it's another option to troubleshoot your problem. If you're gonna try that, make sure to backup all your stuff
Sent from my SGH-I317M using xda premium

AlonB. said:
If flashing stock rom doesn't help, your internal memory might be corrupted, and might need to format it through recovery.
It's not a sure thing but it's another option to troubleshoot your problem. If you're gonna try that, make sure to backup all your stuff
Sent from my SGH-I317M using xda premium
Click to expand...
Click to collapse
I think that something like that is the real problem.
Must I format /storage/sdcard0 or format everything except my external card?
By the way, how can the internal memory becames corrupt?

maztermdq said:
I think that something like that is the real problem.
Must I format /storage/sdcard0 or format everything except my external card?
By the way, how can the internal memory becames corrupt?
Click to expand...
Click to collapse
It's hard to say what made it corrupt (if at all, remember, this is only an assumption). Could've been an app that caused it, could've been flashing a custom rom, and something went wrong during the flashing process.
If you're using twrp (which i highly suggest you do), in the 'wipe' menu there's an option to wipe internal sd. DON'T FORGET! before you do this make a nandroid backup and keep that backup on your external sd, or on your computer. Also, backup all your stuff, like pictures, music, etc.
Sent from my SGH-I317M using xda premium

How long do you usually wait at the samsung logo?

AlonB. said:
It's hard to say what made it corrupt (if at all, remember, this is only an assumption). Could've been an app that caused it, could've been flashing a custom rom, and something went wrong during the flashing process.
If you're using twrp (which i highly suggest you do), in the 'wipe' menu there's an option to wipe internal sd. DON'T FORGET! before you do this make a nandroid backup and keep that backup on your external sd, or on your computer. Also, backup all your stuff, like pictures, music, etc.
Sent from my SGH-I317M using xda premium
Click to expand...
Click to collapse
Thank you AlonB.
I'll try.
I'm using CWM right now, because I thought that TWRP could be part of the problem.
I have two backups with CWM and two with TWRP, An one complete with Titanium also!

KDurantula said:
How long do you usually wait at the samsung logo?
Click to expand...
Click to collapse
Hi KDurantula,
At the begining abuout 20-30 minutes.
One time I waited for more than an hour.
Lately, no more than 15 min.

maztermdq said:
Thank you AlonB.
I'll try.
I'm using CWM right now, because I thought that TWRP could be part of the problem.
I have two backups with CWM and two with TWRP, An one complete with Titanium also!
Click to expand...
Click to collapse
AloneB,
I tried with fomat internal SD card, but without results.
After formated /sdcard, I formated /system, wiped data/factory settings, wiped cache and wiped dalvik.
I was ready to flash CleanROM 4.5, but stuck after teh second "Next".
So I went for the nandroid but... MD5 is worng!!
I'll try to back to stock again and see..

maztermdq said:
AloneB,
I tried with fomat internal SD card, but without results.
After formated /sdcard, I formated /system, wiped data/factory settings, wiped cache and wiped dalvik.
I was ready to flash CleanROM 4.5, but stuck after teh second "Next".
So I went for the nandroid but... MD5 is worng!!
I'll try to back to stock again and see..
Click to expand...
Click to collapse
Hi AloneB,
Before I return to stock rom, i tried with another rom; JediXPX... and it works!!
I must to try with some other, but at least this works when before the format it doesn't work.
Thank you!
PD: Excuse me my ingnorance, but how to thanks to you? And how can I close the thread?

maztermdq said:
Hi AloneB,
Before I return to stock rom, i tried with another rom; JediXPX... and it works!!
I must to try with some other, but at least this works when before the format it doesn't work.
Thank you!
PD: Excuse me my ingnorance, but how to thanks to you? And how can I close the thread?
Click to expand...
Click to collapse
The only thanks you could give is just hitting the thanks button on my answers to you. But you don't really have to, it's entirely up to you. If you think my responses are helpful to you, then by all means ... In order to close a thread you could ask a moderator to do so. I'm not sure you're obligated to do so.
Btw, if cwm gives you an md5 error, could be most likely because you changed the name cwm has originally assigned to that backup. To solve this, just change it to what it was. If you didn't change the backup name, you could try going into advanced menu in cwm and toggle signature check to disable
Sent from my SGH-I317M using xda premium

AlonB. said:
The only thanks you could give is just hitting the thanks button on my answers to you. But you don't really have to, it's entirely up to you. If you think my responses are helpful to you, then by all means ... In order to close a thread you could ask a moderator to do so. I'm not sure you're obligated to do so.
Btw, if cwm gives you an md5 error, could be most likely because you changed the name cwm has originally assigned to that backup. To solve this, just change it to what it was. If you didn't change the backup name, you could try going into advanced menu in cwm and toggle signature check to disable
Sent from my SGH-I317M using xda premium
Click to expand...
Click to collapse
I did it imediatly!
Thank you for your help.
Regards.

[Q] Cant Restore My Phone

Hello.
I want to restore my friends galaxy s2 (t989), but no matter what I do it will not restore. I tried odin and I tried flashing a different rom through cwm recovery, but everytime i boot it up after restoring it stays the same way. Meaning that all of the app, settings, photos, etc remain on the phone. As if I didnt even try to restore it. I am guessing it is a virus but I dont know how to remove it Another hint that it is a virus, every time i remove or install a new app from the play store, when I reboot the changes are un-done, meaning that the apps that I removed come back, and the apps that I installed are gone. It is almost as if it is stuck on a state and keeps reverting to it after every reboot. Anybody have any suggestions? Thanks

Try doing a factory reset in the phone settings then go into recovery and wipe as if u are about to flash another ROM. Manually put the phone into download mode and try to restore from there
Sent from my SAMSUNG-SGH-T989 using xda app-developers app

sadakli2010 said:
Hello.
I want to restore my friends galaxy s2 (t989), but no matter what I do it will not restore. I tried odin and I tried flashing a different rom through cwm recovery, but everytime i boot it up after restoring it stays the same way. Meaning that all of the app, settings, photos, etc remain on the phone. As if I didnt even try to restore it. I am guessing it is a virus but I dont know how to remove it Another hint that it is a virus, every time i remove or install a new app from the play store, when I reboot the changes are un-done, meaning that the apps that I removed come back, and the apps that I installed are gone. It is almost as if it is stuck on a state and keeps reverting to it after every reboot. Anybody have any suggestions? Thanks
Click to expand...
Click to collapse
In recovery go to mount and storage section. Then format data,system, and cache. Then factory data reset. This will fix it. The same way you format a sd card and it wipes it clean thats what happens when you format data,system, and cache.
Sent from my SGH-T989 using Tapatalk

biglil1 said:
Try doing a factory reset in the phone settings then go into recovery and wipe as if u are about to flash another ROM. Manually put the phone into download mode and try to restore from there
Sent from my SAMSUNG-SGH-T989 using xda app-developers app
Click to expand...
Click to collapse
richardlibeau said:
In recovery go to mount and storage section. Then format data,system, and cache. Then factory data reset. This will fix it. The same way you format a sd card and it wipes it clean thats what happens when you format data,system, and cache.
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
Thank you guys for answering, I tried both methods but neither worked. After some more research I found out what is causing this to happen. Apparently the internal memory of the phone is stuck as read only, I don't know how he did that. While I am searching for a way to make is read and write, I came across this thread http://forum.xda-developers.com/showthread.php?t=2025475 but it is for the skyrocket and there was no solution. However, I also came across this http://androidforums.com/incredible-support-troubleshooting/347685-internal-phone-storage-becomes-read-only.html for the HTC Incredible, but to be honest I have no idea what he did and whether or not it will work on this phone. Do you guys have any idea how make the internal memory of his phone read and write instead of read only? Any help is appreciated thank you.

sadakli2010 said:
Thank you guys for answering, I tried both methods but neither worked. After some more research I found out what is causing this to happen. Apparently the internal memory of the phone is stuck as read only, I don't know how he did that. While I am searching for a way to make is read and write, I came across this thread http://forum.xda-developers.com/showthread.php?t=2025475 but it is for the skyrocket and there was no solution. However, I also came across this http://androidforums.com/incredible...internal-phone-storage-becomes-read-only.html for the HTC Incredible, but to be honest I have no idea what he did and whether or not it will work on this phone. Do you guys have any idea how make the internal memory of his phone read and write instead of read only? Any help is appreciated thank you.
Click to expand...
Click to collapse
Only way I can think of is in root explorer. At the top it says mount as hit the toggle to R/W.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app

sadakli2010 said:
Thank you guys for answering, I tried both methods but neither worked. After some more research I found out what is causing this to happen. Apparently the internal memory of the phone is stuck as read only, I don't know how he did that. While I am searching for a way to make is read and write, I came across this thread http://forum.xda-developers.com/showthread.php?t=2025475 but it is for the skyrocket and there was no solution. However, I also came across this http://androidforums.com/incredible-support-troubleshooting/347685-internal-phone-storage-becomes-read-only.html for the HTC Incredible, but to be honest I have no idea what he did and whether or not it will work on this phone. Do you guys have any idea how make the internal memory of his phone read and write instead of read only? Any help is appreciated thank you.
Click to expand...
Click to collapse
Flash new rom then go back into recovery and format everything and reset. some recoveries have mount system options so maybe find another one. Something is definitely weird going on. Root explorer, Root toolbox,and other apps have option to mount system as rw as well like biglil said

richardlibeau said:
Flash new rom then go back into recovery and format everything and reset. some recoveries have mount system options so maybe find another one. Something is definitely weird going on. Root explorer, Root toolbox,and other apps have option to mount system as rw as well like biglil said
Click to expand...
Click to collapse
biglil1 said:
Only way I can think of is in root explorer. At the top it says mount as hit the toggle to R/W.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app
Click to expand...
Click to collapse
Im bad at explaining stuff so let me try explaining it a different way.
Like I said, I want to change the rom on my friends phone. I have a fair amount of experience in doing this since I also have an s2 running jedi knight 6. As usual, I would reboot into recovery, wipe system/factory reset, wipe cache/dalvik then install rom. This is where it gets weird, after I boot up the phone, it goes back to the way it was, as if I did not wipe anything. I even tried flashing a completely different rom and I even tried restoring it back to stock rom through ODIN nothing happens. Also, the mount toggle in root explorer is only for the root system, not the internel memory of the phone. Thanks for the help though.

Ok use titanium backup. Two options guaranteed to work. Find the wipe all system and data option use that. If that doesn't work find unintegrate system dalvik option and use that. One these should definitely work.
Sent from my SGH-T989 using Tapatalk

richardlibeau said:
Ok use titanium backup. Two options guaranteed to work. Find the wipe all system and data option use that. If that doesn't work find unintegrate system dalvik option and use that. One these should definitely work.
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
I tried that but it didn't work either. I think i am out of ideas lol. We even sent it to Samsung about a month ago and they couldn't fix it, mainly because it was rooted. Anyways, I appreciate you guys trying to help me.

sadakli2010 said:
I tried that but it didn't work either. I think i am out of ideas lol. We even sent it to Samsung about a month ago and they couldn't fix it, mainly because it was rooted. Anyways, I appreciate you guys trying to help me.
Click to expand...
Click to collapse
NP always try to help were I can. Sorry nothing worked. I'm interested in the out come of this problem. If u get it back up and running please post back the details. Curiosity gets the best of me.
Sent from my SAMSUNG-SGH-T989 using xda app-developers app

[Q] N7 bootlooping on custom rom?

Okay, so I bought the n7 v2, went home, unlocked the boot loader, and rooted it. I've tried to flash versions of vanir I built my self, the betas that are posted here on the forums, and I also tried carbon ROM. Every time I flash a ROM, my device bootloops, so I just hold power + vol down to get to boot loader mode so I can boot into recovery. Any fix for this? I've tried flashing a stock IMG and re rooting to. No luck.

Bump

frap129 said:
Bump
Click to expand...
Click to collapse
Did you even wipe, and perform a factory reset before flashing a ROM?
Sent from my Nexus 7 using xda app-developers app

TheMrcool212 said:
Did you even wipe, and perform a factory reset before flashing a ROM?
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Yes, I wiped data, cache, and dalvik every single time.

Bump? Anyone?

try redownloading the rom and install, could of been a bad download
Sent from my Nexus 7 using xda app-developers app

shortyboy said:
try redownloading the rom and install, could of been a bad download
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
With four different ROMs, 2 transfered via adb and 2 from different download hosts, I doubt its a bad download.

frap129 said:
With four different ROMs, 2 transfered via adb and 2 from different download hosts, I doubt its a bad download.
Click to expand...
Click to collapse
you should've mentioned that in your original post. id try to reflash to complete stock and start all over. it seems like something you modified in the first rom you've flash isn't being removed from another flash,so going back to stock,you can be sure everything is working first.hope this helps

shortyboy said:
you should've mentioned that in your original post. id try to reflash to complete stock and start all over. it seems like something you modified in the first rom you've flash isn't being removed from another flash,so going back to stock,you can be sure everything is working first.hope this helps
Click to expand...
Click to collapse
I did mention that in the original post, as well as the fact that ive flashed stock a few times already.

Did you boot into the tablet after unlocking the bootloader but before rooting it? If not, try formatting data (not factory resetting) in recovery. I had the same experience and my sdcard never got populated with the default folders and files, remaining at 0MB. Apparently, symptoms of this problem include being unable to factory reset from recovery, being stuck on the splash screen, and having TWRP demand a password.

bananagranola said:
Did you boot into the tablet after unlocking the bootloader but before rooting it? If not, try formatting data (not factory resetting) in recovery. I had the same experience and my sdcard never got populated with the default folders and files, remaining at 0MB. Apparently, symptoms of this problem include being unable to factory reset from recovery, being stuck on the splash screen, and having TWRP demand a password.
Click to expand...
Click to collapse
I'll try that, maybe its because I restore my data after I wipe it that this happens. Another thing I've found is that after I flash and the restore my system partition that I backed up, su says that no subject binary was found, even though I've flashed it a million times. And some root apps don't work because it says no binary is found.