The purpose of the thread is three-fold:
1) understand why a phone with 4.4 from the factory (not 4.4.2) cannot be downgraded by RSD Lite or motoboot to 4.2.2 with an exception that says "downgraded security" or similar
2) figure out if there is a way to fake whatever is detected during flashing to make it think it is receiving an upgrade and not a downgrade
3) figure out whether it is possible to modify the system
img from the 4.4 or 4.4.2 update and to inject root on a locked bootloader
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I need to get my XT890 back to a stock unrooted condition so that I can install my company's corporate email app which cannot be installed on rooted phone.
I purchased the phone used. It came with unlocked bootloader but didn't seem to be rooted. It was a Retail GB version of ICS when I got it and it got OTA Jelly Bean update about a month ago.
I had some help from my company's IT department and now have a somewhat-bricked XT890. I am able to use the volume down-power combination to get to the recovery menu but nothing works. Getting to the recovery or normal boot options results just in hanging (the power down option does work)
I can also access the device via fastboot but can't seem to flash it back to good state. I downloaded a Retail GB group of images and attempted to flash using fastboot as well as using RSDLite 6.1.4.
With fastboot, I got as far as flashing the system, but it failed with comments about block size being too big (or something like that). RSDLite fails on the first step of flashing the GPT.
Is it possible to get this phone back to stock condition (including locked bootloader)? If so, can someone help a relative noob with detailed descriptions?
TIA.
http://sbf.droid-developers.org/smi/CFC_9.8.2I-50_SMI-26_S7_USASMIJBRTEU.xml.zip
Flash this one. Your Bootloader seems to be locked. If it where unlocked, the gpt. bin would have been passed and you would have an hard bricked Device.
DON'T USE ICS FILES AFTER UPDATING TO JB!
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HSD-Pilot said:
Flash this one. Your Bootloader seems to be locked. If it where unlocked, the gpt. bin would have been passed and you would have an hard bricked Device.
DON'T USE ICS FILES AFTER UPDATING TO JB!
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Click to collapse
When I enter "fastboot oem unlock" with the code I got from Moto, i get an error that the boot loader is already unlocked.
RSDLite fails at the first step when i use the download you provided.
If I enter "fastboot flash gpt gpt_signed", then I get a message "target reported max download size of 104857600 bytes"
"sending gpt (32kb)"
"Battery low"
FAILED (remote failure)
Connect your Wall Charger while you're booted into AP. Let it charge for an hour to get it back to Battery OK.
You can't flash anything with Battery Low.
HSD-Pilot said:
http://sbf.droid-developers.org/smi/CFC_9.8.2I-50_SMI-26_S7_USASMIJBRTEU.xml.zip
Flash this one. Your Bootloader seems to be locked. If it where unlocked, the gpt. bin would have been passed and you would have an hard bricked Device.
DON'T USE ICS FILES AFTER UPDATING TO JB!
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Click to expand...
Click to collapse
We are in agreement about ICS/JB downgrading I see! If you ever allow PM I'll tell you what I've been up to!
As for the OP, apparently versions of RSD lite before 6.0 didn't accept blocks larger than 100mb I was told. 6.1 should be good.
SharpnShiny said:
We are in agreement about ICS/JB downgrading I see! If you ever allow PM I'll tell you what I've been up to!
As for the OP, apparently versions of RSD lite before 6.0 didn't accept blocks larger than 100mb I was told. 6.1 should be good.
Click to expand...
Click to collapse
After recharging and then flashing the linked image above using RSDLite 6.1.4, had success on the first try. Even got my corporate email installed without a hitch.
Thanks for the help!!!
I'm using a C6906 on Rogers in Canada, locked bootloader. Currently on the latest 4.2 variant, rooted. I personally don't care about having custom recoveries, modified kernels and all the other bells and whistles that float around these forums.
Is there a root for 4.3 for the Z1 that isn't a cluster**** of downgrading and flashing and what not?
Stock kernel, stock recovery, stock everything.. just a root method so I can use Greenify and TiBu on 4.3?
I know there's 90 other threads on root, and I'm sure someone is going to post the Dual Recovery thread - but please.. as much as most people don't read or search before posting, if you're thinking of posting that thread please re-read the above. I don't want to have custom recoveries and all that other crap.. just root, so the apps that require root work on 4.3.
There is not a Direct Root for 4.3. Sorry for you but if you want a Rooted Android 4.3 FW .136 you have to Downgrade to .534 Root with Bin4ry, then Update directly to Pre-Rooted .136 Provided by NUT. Also I know you don't want Dual Recovery but in this case is very helpful because after all this process you can Backup the entire system and if one day something go wrong with you Android you can Restore it to new. All have his reasons.
Are you on 4.2 or 4.3?
4.2 has direct root methods (vroot, 360root and kingo)
You can try this if you're on 4.3:
Downgrade to 4.2 via flashtool, buy supersu, tick the survival mode and upgrade to 4.3 again.
This can work...
You won't have a recovery.
But as of now: there is no direct way to root 4.3
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HI all,
My Xperia Z is running 10.3.1.A.2.67 stock ROM.
An app I was trying to run has some mechanism to prevent running on rooted devices. I read somewhere and tried to circumvent this by renaming the /system/xbin folder. What I didn't realise is that cause my phone to lose root, i.e. SuperSU says "There is no SU binary installed..."
Now I tried to re-root using all the tools I could find (Doomlord, cubeundcube, Goroh_kun) but they all encountered a similar problem: /system/xbin/su: cannot open for write: No such file or directory. It seems that all the tools can't write file to the /system directory.
I also tried the unroot tool from http://forum.xda-developers.com/showthread.php?t=1886460, but it threw an error as well.
Can anyone shed some light into what's causing this, and how can I fix it?
Thank you all
Flash official 4.2 ftf of your region. Use easy rooting method of general section. If your bootloader is locked, and only then, update via ota to 4.3
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St.Jimmy90 said:
Flash official 4.2 ftf of your region. Use easy rooting method of general section. If your bootloader is locked, and only then, update via ota to 4.3
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Thank you very much! I've flashed the official firmware and now my phone is back in the original state before I messed things up. I used the cubeundcube method from Bin4ry script in http://forum.xda-developers.com/showthread.php?t=1886460.
I haven't updated to 4.3 yet because last time I read, the only way to root 4.3 is to unlock the bootloader. My bootloader is still locked, because I didn't want to mess with the DRM stuff when I got the phone. This understanding could be outdated.
It seems that I can keep root through the OTA process? Is there anything I should do to ensure I can get root after 4.3? Would Bin4ry's script allow it?
Thanks again
If I remember correctly you should keep root while updating ota
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Here's the story so far. I'm trying to get root access on a Z3 compact. I was at the latest Ota firmware as of January 2016. I just unlocked my bootloader (in Linux) and now I guess I'm at the stock ROM that ships with the phone? Android 5.1.1, build 23.4.A.1.200
I have downloaded CM12 nightly, but I'm afraid to flash it. I also have been reading several guides for rooting. Namely, this one http://forum.xda-developers.com/z3-compact/general/how-to-root-backup-drm-keys-t3013343
Now I have the 23.0.A version downloaded. If I flash that, what next? Run giefroot? But wwherw do I go from there. If I upgrade through Ota updates do I keep root?
Are there any Ota ROMS that are already rooted that I can flash via fastboot? I'm not able to flash things in Windows since win10 won't recognize the fastboot drivers, so I'm using Linux, which I'm more comfortable with anyway
Z3+ not z3 forums here...
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Does root break the ability to use OTA? I have unlocked my bootloader and only used the root boot img, other than that, nothing custom (no custom recovery or ROMs yet).
I'm still on .103 (CLT-L09), but I'm hearing of people on .111
I get the message that an OTA update is available, but i am not able to update because I have TWRP. Maybe it would be possible to flash update.zip via TWRP when someone offers a patched version.
Annie the Eagle said:
Does root break the ability to use OTA? I have unlocked my bootloader and only used the root boot img, other than that, nothing custom (no custom recovery or ROMs yet).
I'm still on .103 (CLT-L09), but I'm hearing of people on .111
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Click to collapse
I had the same concerns, was on the 106 fw, rooted and bootloader unlocked.
I received the update notification for the 107 fw, accepted the update, system downloaded the OTA and restarted, but was unable to update the OTA, then restart and update notifaction said the phone will download the whole 107 fw not just the OTA file, then restarted and updated successfully, had to re-root it then.
Hope this info is helpful,
In my case this didn't work (received the 120 firmware ota but didn't install with twrp). In a German forum I read you need a no-check recovery. Is there any already available or anybody working on it?
Bastian
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