Related
HI. i am opening these post for people like me that the have the same chineese pad and they cant root it.
I have try to root it with any method but with no succed.
(adb command, z4root, universal root, gingerbreak,oneclick)
at oneclick and adb tablet no recognized as usb. the first thing that i do, is to change the usb drivers with the usb googles drivers.Than oneclick it found it as rooted!but when i press to root it again i had many errors.
i upload a image with device info that i grap form adb
i am start to thinking that they put some protect that we cant have access at the rom. i use root explore r/o its highlight.its give mt the permissionto delete apk from system./app but later i can find them inside. at the info of taach u can see that device is rooted!
anyway. i found a firmware update but i havent test it yet
same issue here
Hi. I too tried to root this chinese pad (Flytouch 6) but unable to. Also I was trying to update the ROM with HoneyComb but unable to. ANy help is appreciated.
Thanks. Mounesh.
mounesh25 said:
Hi. I too tried to root this chinese pad (Flytouch 6) but unable to. Also I was trying to update the ROM with HoneyComb but unable to. ANy help is appreciated.
Thanks. Mounesh.
Click to expand...
Click to collapse
Hi my mate. i have found 2 updates i have test one only and i succed to update it.
these is from another forum:
<<ok new download link for firmware update http://www.multiupload.com/5DI5AAL5BQ
i have found a issue with it when you go into android market because this as the latest android market apk it will let you download games etc free and paid but on some it comes up not enough memory,but i noticed by going into settings and clearing google framework and shutting down tablet a few times it allowed me to download a lot more i have put a earlier android market apk on which works perfect,but when i shut down tablet it goes back to newest android market apk?so if you know of a way to delete the android market apk on the tablet let me know?
////////////////////////////////////////////////////
please note before you start you must have your tablet charging with tablet charger otherwise it will not let you put firmware on tablet
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
the way of flash the firmware of v10
sd-card into tablet while turned off
1,press the "menu"+""power"ON button at the same time
2.release the “power” after the boot up.and keep holding menu
3.pls release the "menu" after the there is a flash firmware picture with a android holding a brown bag/box
4. then you will have to do some scrolling with these buttons
5 function of the button front of the device is page up
6 function of the button of "meun" is page down
7 function of the button of "Home" is confirmation (to install firmware)
you will have to scroll to install from sd-card then press home button
you will have to scroll to your firmware them press home button to install
if you ever need to reflash or restart your tablet for any reason you can do this by holding the the on button and menu?which will allow you to reload firmware etc >>
motherofallbattles thanks a lot
chriskleov said:
the first thing that i do, is to change the usb drivers with the usb googles drivers.Than oneclick it found it as rooted!but when i press to root it again i had many errors.
i upload a image with device info that i grap form adb
i am start to thinking that they put some protect that we cant have access at the rom. i use root explore r/o its highlight.its give mt the permissionto delete apk from system./app but later i can find them inside. at the info of taach u can see that device is rooted!
anyway. i found a firmware update but i havent test it yet
Click to expand...
Click to collapse
I am confused as to what USB drivers you used to get the PC to recognize the FlyTouch...can you please provide a download link to these USB drivers you used? I am trying to get my device rooted as well. Thanks.
Thanks for the update
Hi Cheklov,
I did manager to update the firmware using your given link and instructions.
Thanks mate.
BTW...is there a way I can update to honeycomb version?
I've downloaded a few HC versions meant for other tablets like WMT, HTC etc..but no way could I update. Any instructions and link is appreciated.
Thx, Mounesh.
flytouch5.user said:
I am confused as to what USB drivers you used to get the PC to recognize the FlyTouch...can you please provide a download link to these USB drivers you used? I am trying to get my device rooted as well. Thanks.
Click to expand...
Click to collapse
to change the drivers of wopad go to devices and printers.there you will find it as usb storage.there press right click.then hit at the 2nd tab and then prpoerties.chancge manual the drivers.
http://www.megaupload.com/?d=JA6F5VS6
mounesh25 said:
Hi Cheklov,
I did manager to update the firmware using your given link and instructions.
Thanks mate.
BTW...is there a way I can update to honeycomb version?
I've downloaded a few HC versions meant for other tablets like WMT, HTC etc..but no way could I update. Any instructions and link is appreciated.
Thx, Mounesh.
Click to expand...
Click to collapse
i have no idea for custom rom.i think its to early..the chinese pad its to new...no one havent succed to root it.
I ROOT IT!!!!!
FINALY I SUCCED TO ROOT IT!!!
i succed by adb cmds!!
ADB root
ADB shell mount -o remount,rw /system
ADB push su-3.0.3.2-efghi-signed /system/xbin/su
ADB push su-3.0.3.2-efghi-signed /bin/su
ADB shell chown 0.0 /bin/su
ADB shell chmod 04755 /bin/su
ADB shell chown 0.0 /system/xbin/su
ADB shell chmod 04755 /system/xbin/su
ADB shell mount -o remount,ro /system
ADB install -r Superuser-3.0.7-efghi-signed.apk
reboot UNISTALL superuser.apk and INSTALL IT again!
@chriskleov can you tel me more about this updates?
is there update to android 3.0 or higher?
USB OTG control problem
I've updated the firmware successfully.
But now I have a new issue with the USB OTG. I cannot use the USB OTG control to change from host mode to device mode. Everytime I try to go and click on USB OTG control, it throws error "the application USB OTG (com....) has stopped unexpectedly". Ive tried to reset to factory defaults...but now seems the problem is still stuck there. I cannot go into ADB to do the rooting without enabling the 'device' mode connection for the USB. pl help.
Ive googled but none of the solutions seem to be working.
mounesh25 said:
I've updated the firmware successfully.
But now I have a new issue with the USB OTG. I cannot use the USB OTG control to change from host mode to device mode. Everytime I try to go and click on USB OTG control, it throws error "the application USB OTG (com....) has stopped unexpectedly". Ive tried to reset to factory defaults...but now seems the problem is still stuck there. I cannot go into ADB to do the rooting without enabling the 'device' mode connection for the USB. pl help.
Ive googled but none of the solutions seem to be working.
Click to expand...
Click to collapse
wipe data then
try to reflash the upadate
and then aagain wipe
done that
Ive already done that. But result is same.
anyone can help?
mounesh25 said:
Ive already done that. But result is same.
anyone can help?
Click to expand...
Click to collapse
http://www.apad.tv/apadforum/list.php?category/46-Flytouch-5-Wopad-Firmware
Who can tell me why the Navionics Marine 2.1 crashes (force close) after hitting "i agree" in the beginning? Your help would be highly appreciated!
USB problem
hi all
I.ve updated with the file from the above post and noe I have the same problem with the usb
force close - no way to connect to PC
please help
You can try this method to root, it is for another similar vimicro device:
Q: How to root the Haipad M8?
A: You need the GingerBreak and some manual work.
You need to have an installed Android SDK with adb.exe or take this archive with adb.exe only. And you need to have a modified USB driver.
Connect the Haipad M8 to the PC (USB OTG). You will have to install modified USB driver if it is needed.
"USB debugging mode" must be enabled in the device.
Run the cmd.exe and go to a directory where the adb.exe is located (for example: cd d:\adb)
Run command:
Code:
adb root
adb shell
must be # in the prompt (root mode)
Code:
cd /bin
check a symlink su
Code:
ls -l --color=never su
"su -> busybox" is not right. Delete the symlink su
Code:
rm ./su
Install the Gingerbreak and root device.
Install the RootCheker and check the root.
Instructions taken from here: http://www.chinadigitalcomm.com/haipad-m8-vimicro-vc882-t10830.html
mounesh25 said:
I've updated the firmware successfully.
But now I have a new issue with the USB OTG. I cannot use the USB OTG control to change from host mode to device mode. Everytime I try to go and click on USB OTG control, it throws error "the application USB OTG (com....) has stopped unexpectedly". Ive tried to reset to factory defaults...but now seems the problem is still stuck there. I cannot go into ADB to do the rooting without enabling the 'device' mode connection for the USB. pl help.
Ive googled but none of the solutions seem to be working.
Click to expand...
Click to collapse
Can you try to install the attached package and see how it goes. Just confirm you want to replace the existing version. It worked for me.
mounesh25 said:
I've updated the firmware successfully.
But now I have a new issue with the USB OTG. I cannot use the USB OTG control to change from host mode to device mode. Everytime I try to go and click on USB OTG control, it throws error "the application USB OTG (com....) has stopped unexpectedly". Ive tried to reset to factory defaults...but now seems the problem is still stuck there. I cannot go into ADB to do the rooting without enabling the 'device' mode connection for the USB. pl help.
Ive googled but none of the solutions seem to be working.
Click to expand...
Click to collapse
Go to system/app
find usbcontrol.apk
install it
you get a fault (not installed)
after that it works agian
hey!
I found this:
blog.mcbub.com/index.php/tablet-pc/10-2-zenithink-c91-android-4-0-firmware-update-guide-beta-version
Do you think it would work on superpad? Because in guess that zenithink is kind of same thing like superpad m I wrong?
czy86 said:
I found this:
blog.mcbub.com/index.php/tablet-pc/10-2-zenithink-c91-android-4-0-firmware-update-guide-beta-version
Do you think it would work on superpad? Because in guess that zenithink is kind of same thing like superpad m I wrong?
Click to expand...
Click to collapse
I don't know but would be nice!
Hi everyone,
First post (brilliant video!).
My tablet:
Asus Transformer Pad TF300 (rooted)
CWM 5.8.2
My problem:
- We decided to give our Transformer to my gf's dad for his birthday. I tried to backup using a later version of CWM (6 something) but it didn't work. I downgraded to 5.8.2 and it worked fine. I then did a factory reset (which I realise now was not the way to go).
- CMW bootloop : restored my backup, successful - still bootloop.
- Have spent the last 4 hours figuring out ADB and managed to push both a new recovery (rogue) and the latest ASUS firmware to the SDCARD. Despite it confirming the transfer from the cmd line I could not see the zip files in the directories. I tried several times to several different directories. On the last try before the SD card decided to go on vacation I did see one of the files in the root directory.
- Now, no matter what I do, I get a "can't mount /SDCARD" error. Trying to erase/format/factory reset the pad results in errors when trying to access DATA and SDCARD.
- I've located and tried several different scripts from different threads that supposedly create a fake SDCARD directory but nothing has worked
http://forum.xda-developers.com/showthread.php?t=1679274&highlight=encrypted&page=3
- I've also tried to run the install package remotely from ADB but the mounting problem reoccurs
http://www.addictivetips.com/mobile/how-to-install-a-rom-to-an-android-phone-device-without-sd-card/
It appears that many people have encountered similar problems but none of the recommendations have been successful for me so far.
There also seems to be a strange anomaly with the adb shell timing out before I can finish the command. Is this a cable issue?
I'd be super grateful to anyone that can help me sort this out.
Cheers
Sam
Anyone?
I should mention that I had installed Super SU / Super User on the tablet... if that makes any difference.
I woke up this morning and booted the tablet to get this:
E:can't mount /cache/recover/command
E:can't mount /cache/recovery/log
E:can't open /cache/recovery/log
E:can't mount /cache/recovery/last_log
E:can't open /cache/recovery/last_log
Error mounting /cache!
In addition to all the previous problems.
Super!
Nobody? Anybody?! Please help!
Hi,
If you have fastboot mode, try to inject twrp (the last 2.2.x.x or something like that) ...
--> read the way to do that on the http://teamw.in/project/twrp2/97
With last TWRP you can mount sd card (first download & extract stock rom .zip and put it on root of your sdcard)
After that, flash stock rom with TWRP ...
Choose fastboot method...be careful (there is 2 versions : JB or ICS)
SOFT BRICK fixable!!! although root repair not yet covered...
I seemed to have a simular problem on my tf300t.
tried to install a CM 9.1.0 (stable)
Stuck at asus cold boot screen.
Solution i found+
*download Fastboot and an adb.shell brigde if you dont already have it.
*place the downloaded systemware (AVALIBLE ON THE ASUS SUPPORT WEBSITE) you wish to install in the same folder you have fastboot. (example-US_epad_10.4.3.13.blob)[432.3MB]
*Boot tablet into CWM [NOTE: I used CWM-Touch. 6.0.3.1 or something along those lines] (TWRP- im unsure if the process is the same).
-from advanced settings at the bottom, wipe dalvik cache.
-no need to wipe your user data cache, but wipe other data cache.
-reboot to bootloader and select fastboot option. (3rd one with pic of usb) DO NOT PLUG IT IN YET.
*Back on your WIN pc open your windows explorer, find the folder containing the Fastboot.exe and hold shift and right click at the same time for an admin operations menu. You should see an option "Open Command Prompt Here". Click it to begin a Fastboot session.
*NOW CONNECT YOUR TABLET!!!
*TYPE THE FOLLOWING AS SHOWN! DO NOT DIVERT OR YOU SCREW UP-
fastboot -i 0x0B05 flash system blob
***NOTE THAT THIS METHOD WILL TAKE QUITE SOME TIME AND YOUR COMPUTER MAY EVEN LOOK LIKE ITS FROZEN...STOP! JUST LET IT DO WHAT YOU ASKED IT TO...THIS IS QUITE A LARGE TASK AND WILL TAKE TIME. MY PC IS AN OLD DELL E300 dem. I KICK THE PROCESS ATLEAST A DOZEN TIMES BEFORE I JUST LEFT IT ALOOOOONNNE and it worked...although i cant seem to figure out how to delete the old su binary i install so i could re-root it....ANYONE GOT ANSWER? PLEASE HELP. EMAIL IS ALWAYS UP.
IF THESE INSTRUCTIONS ARE UNCLEAR, OR YOU DONT UNDERSTAND SOMETHING, MESSAGE ME...
AND IF THIS HELPED YOU...SHARE THE LOVE-GIMME A THANKS!
Hello,
I turned on my Xoom to see "Encryption Unsuccessful" tonight. If i boot into stock recovery and try to factory reset, it cannot mount Cache. If I plug the device into my computer, fastboot can find it but ADB cannot. I have the proper drivers installed. I can't get into my tablet to turn on USB debugging. I just bought an OTG cable to try to fix it, but cannot find the update.zip file that I need. If i try to fastboot oem unlock, it fails. I've tried everything I can find, I've done hours worth of playing/trial and error to no avail. Any help would be fantastic. Truly at a stand still. Please ask with any specifics needed to assist me.
Is it possible to flash to CWM recovery without being able to boot/find it in ADB?
Thank you,
Bradon
>.<
Nearly to the point of offering some sort of payment for assisting me. I'd rather not ship it out, but more than glad to work something out paypal or giftcard wise. This tablet is the only thing keeping my wife entertained, and another tablet is not in the budget.
But u can connect with fastboot to device ?
if yes this should help you
http://forum.xda-developers.com/showthread.php?t=1451655&page=7
http://forum.xda-developers.com/showthread.php?t=1049485
Probably you will lose all data on it ... Why u wanted to encrypt u device ...
I did it too but it was missunderstanding specialy when flashing a lot .
Alright so...
I've used fast boot flash user data, system, recovery and boot. Those are all successful, but if I reboot.. Nothing changes.
I've loaded many zips onto a flash drive with an otg cable, boot into the stock recovery and try to update, unable to verify signature.
Adv will not find the device, reinstalled drivers many times
Rsd will not find the device
Factory reset fails, cannot mount cache and about 10 other cache/recovery errors
Fast boot OEM unlock fails, unable to write a certain 3 letter file
I'm at work right now, so I can post specifics/pics later.
I didn't try to encrypt it, it seemed like a virus that my wife got. She clicks on advertisements, downloads sketchy files/apps.
It is unrooted, stock recovery.
20+ hours of research and trial.. No success.
Can u use this ?
http://forum.xda-developers.com/showthread.php?t=1074979
Use 2 method.
Write response what happend and it does flash recovery .
You have to unlock bootloader
look here simillar problem :
http://forum.xda-developers.com/showthread.php?t=1571827
http://forum.xda-developers.com/showthread.php?t=1952628
And u do not need any special otg cabel - use stock xoom from package. OTG is for host-usb.
Anyway u will have to do it with fastboot , probably /cache partialy encrypted.
Alright, I just followed the CWM recovery guide.
First off, ADB does not find my device, meaning I cannot reboot into the bootloader. I can flash the recovery only after flashing userdata for some reason. After flashing, it says complete though when I reboot nothing changes. The other 2 links, first one I can't use because adb doesn't find my device, and the 2nd one.. I don't think xoom has a "download mode".
Thanks
Ok, so when u push down button in booting u have only recovery ?
U should have fastboot too ... try to press up vol 1 s after booting, then connect to pc, and check in device manager rmb on "My pc"
And ? .... This must working ... Use fastboot.exe in cmd ( in windows 7 ) on Administrator User.
Also, when I first boot up recovery I get
E: failed to mount /cache (invalid argument.)
E: Can't mount /cache/recovery/command
E: Failed to mount /cache (invalid argument)
E:Can't mount /cache/recovery/log
E:Can't open /cache/recovery/log
E:failed to mount /cache (invalid argument)
E:can't mount /cache/recovery/last_log
E:can't open /cache/recovery/last_log
E: Failed to mount /cache (invalid argument)
E:can't mount /cache/recovery/last_install
E:can't open /cache/recovery/last_install
E: Failed to mount /cache (invalid argument)
If i try to factory reset or clear the cache, I get the same message.
U do not understand what u reading, u cant do this from recovery ...
U have partialy crypted storage ... its normal!
1. download fastboot on windows
2. install drivers from
1) Get the Motorola USB drivers MOTODEV > Documentation & Tools > USB Drivers (you need to sign up on their but maybe you can google this and find it as well)
2) Get the Android SDK Android SDK | Android Developers (you only really need the fastboot executable file for your host OS)
Click to expand...
Click to collapse
3. run fastboot protocol on xoom press down vol "find fastboot" if not press top vol in booting - should fastboot protocol ... in output
4. Use fastboot.exe from android sdk - run in in cmd ( Run ad Administrator , right click on cmd)
4. unlock bootloader
5. flash rom boot recovery in *.img format!
This must working...
When I connect it to my PC in fastboot mode, it comes up as "Mot Single ADB Interface"
bcwest said:
When I connect it to my PC in fastboot mode, it comes up as "Mot Single ADB Interface"
Click to expand...
Click to collapse
Is it bad ? - now when u show up "fastboot protocol ... " on xoom run fastboot from android sdk .
Fastboot ran from cmd with admin privileges.
fastboot oem unlock
used volume controls to select yes/i accept
Device unlock operation in progress...
Formatting UDA.
hardware/tegra/core/system/moto/fastboot_sparse.c:324 NvStorMgrFileOpen("UDA"):196624
ERROR: Failed to format UDA.
Error while unlocking device.
unplug mmc card from xoom and try again, where did u get files ... system.img ,recovery.img,boot.img ?
I've tried with both the mSD card in, and out. I got the boot/system/recovery/userdata from the stock image post from XDA.
ok, I didnt tryed this with stock rom, try to change recovery with http://forum.xda-developers.com/showthread.php?t=1074979
reboot and try to get to new recovery.
do this:
fastboot flash system system.img
fastboot flash boot boot.img
fastboot flash recovery recovery.img <- from http://forum.xda-developers.com/showthread.php?t=1074979
fastboot flash userdata userdata.img
fastboot erase cache
fastboot erase userdata
fastboot reboot
Which model of xoom u have ? Did u restart xoom after flashing ? Is there any output ? (without up,down vol )
mx600 is the model that I have.
All of the flashing goes through fine
fastboot erase cache fails instantly (Failed to format PDB)
fastboot erase userdata fails instantly (Failed to format PDB)
fastboot reboot
volume down for recovery to see if CWM changes went through
stock android recovery
If I put my mSD card back into the unit, and try to do it all over again..
Flashes go through fine
Cache fails instantly, same error
Erase userdata causes my cmd to hang up, and the xoom sits at "StorMgr Formatting UDA STATUS: | | |"
5 minutes later, still sitting at that message.
Mx600, I restarted the device after flashing everything, If I let it go past the Dual Core Technology big red M, it boots into android but all that I get is the Encryption Unsuccessful screen. It says push restart, but it does nothing.
Which model of xoom u have ? Did u restart xoom after flashing ? Is there any output ? (without up,down vol )[/QUOTE]
Damn, that mean bootloader is locked or he have problem with gpt ?
ok... I'm not sure what will hapend but u can try to lock it again
fastboot oem lock
then reboot
fastboot oem unlock
output ?
Device Lock operation in progress...
Formatting UDA.
hardware/tegra/core/system/moto/fastboot_sparse.c:350 NvStorMgrFileWrite(ff, 0x00004000:00000000):196608
ERROR: Failed to format UDA
Device lock operation FAILED.
I have a Moto G xt1033 with no operating system.
I can recognize the device using fastboot devices and adb devices. (drivers are installed properly)
CWM recovery is installed properly.
There's no operating system and the sdcard is empty.
When I try to use the command adb push to get the rom.zip into the sd card (or data/media folder) it just won't work, it will give me a 'protocol failure' after a couple of seconds.
When I try to use the command adb sideload it will immediately crash (at 2%) and give me the error: failed to write data 'protocol fault <no status>'.
I've also tried to install a stock rom using flashing through fastboot, but it also failed.
Anyone has any idea of how I can save this phone?
It sounds like something is not right with your ADB / Fastboot setup. What operating system is on the PC / Laptop?
You might want to try reinstalling ADB:
http://forum.xda-developers.com/showthread.php?t=2317790
Alternatively, a quick way to get access to Recovery Mode ADB is to use Linux, either as a LiveCD or full install. The command to install ADB / Fastboot on Ubuntu is:
sudo apt-get install android-tools-adb android-tools-fastboot
Thanks for the tips, my computer's OS is Windows 7, but the problem was related to my computer's front USB ports, all 6 of them. As soon as I connected to one of my back USB port it worked.. Most likely because my front ports are 2.0 and the back ones 3.0. Never thought it would make a difference in this case, kinda feel stupid for having wasted so much time looking for a solution when it was so simple.
Thanks for the reply anyway @lost101.
XT1032
Am experiencing the same problem,
unable to sideload/push stock rom gets stuck on push at 31%
Recovery CMW, able to boot into recovery
getvar=all, i don't even have imei shown in that!
pls help me fix it...
Thanks a load in advance
As soon as I select 'ADB sideload' on TWRP, the phone is no longer recognized by the desktop computer nor ADB.exe...
But when I select cancel, the device is then recognized. This is version 3.3.1-0
Edit: It seems to only logical solution is to use 'adb push [image_name] /sdcard/.'
i have huawei g6 u00 locked bootloader with stock rom , rooted with busybox and the phone shows the famous "user data partition has crashed" this is the result of corrupt partitions /data and /cache....
what have i tried so far:
i managed to install busybox with parted but when i touch the cache partition the system went lockdown and become read only system....
i manged to make calls with adb but every time i use mmi code there is an error...
almost every change revert back excpet installed busybox..
i can temporally with root genius and tried e2fsck partitions but due to bad magic block failed to repair.
update with hisuite cannot be done becuase i have the last firmware
update with external sdcard dload or adb also failed
format factory trough recovery failed mount /cache and /data
bootloader locked so right now fastboot out of question
i even tried mount external partition as /data and /cache just to make phone reboot...
have a look at this http://www.dotandroid.com/android-root-guides/unbrick-qualcomm-mobiles/
it's looks good but my phone isn't realy hard breaked so i can't go "Qualcomm HS-USB QDLoader 9008" mode should i make it break?
other than that i have searched soulotion Thoroughly in xda,google and even facebook group but no results.
right now i search for:
1)open the bootloader (for free without charge).
i have tried the offical way but it got the message "Log in your Huawei ID for continuously 14 days on your phone which you need to
unlock" but obviously i cant do that because the phone almost dead...
Furthermore even to get the product id i was forced to use id generator because when i use something like{ adb shell am start -a android.intent.action.CALL -d tel:*#*#1357946#*#*} give me mmi error
i have even tried this https://forum.xda-developers.com/ascend-g6/general/huawei-ascend-g4-4g-l-11-instant-t3190617 but maybe because i can't dial *#*#2846579#*#* i cant do it...
so if you know free unoffical way to open the bootloader which doesn't require dialing it will be big help.
btw if my details are(from the back of the phone):
serial number:H2QDU14902006527
imei:357485036189548
maybe someone know how to magically extract the code from hauwei?
2)temporarily fix
because i need the bootloader code maybe i can copy somefiles to the temp system and make the phone at least browse to hauewi website?
3)last resort-run the system from external sd card
like https://forum.xda-developers.com/transformer-tf701/help/dead-mmc-ideas-t2830332/page2 {look for post #17 by lexelby}
lexelby managed to extract macallan.fstab from boot.img i have used ife134.exe and ext4 unpacker and got nothin... but even if i did get somethi ng i don't know how to modify macallan.fstab so please explain how to do this.i also suspect that with stock rom and locked bootloader this option is also blocked...
thanks