Xperia z2 tablet rooted but locked - can't install ROM... - Xperia Z2 Tablet Q&A, Help & Troubleshooting

Hi,
I've got an Xperia Z2 tablet (SGP511) and am attempting to install Cyanogenmod 12.1 on it. Unfortunately no matter what I try I can't get there following the instructions on the Cyanogenmod website.
When I try to unlock the bootloader using Flashtool (which I thought was already unlocked as i've previously had CM installed but went back to stock) I get the response: FAILED (remote: Command did not succeed).
When I try to unlock the bootloader using Terminal, I get FAILED (remote: Device is already rooted).
So then, assuming the device is already rooted, I try flashing the boot.img file in the steps on the site, and I get sending 'boot' (14160 KB)...
OKAY [ 0.447s]
writing 'boot'...
FAILED (remote: Command not allowed).
So i'm completely lost. I'd really like some help on this and hope someone can give me their time.
Thanks!

Thanks for the help anyone who has the time.

Related

Installing Pre Rooted Kernel

I have an xperia ray (ST18i) and it is stuck on sony/sony ericsson logo forever. I already flashed many versions of stock roms (using flashtool) and nothing worked. If I flash an old rom (4.0.2.A.0.62) it will display sony ericsson and if I install a newer rom (4.1.B.0.587) or update vita pc companion/sus it will display the sony logo and hang there until the battery is removed or dead.
My device has a locked bootloader and is not rooted and I want to install a custom kernel/pre rooted kernel to install custom roms via CWM hoping it would solve my problem. So I unlocked my bootloader booted into fastmode and attempted to flash a pre rooted kernel but it says:
Flashing selected kernel
sending 'boot' (5760 KB)...
FAILED (remote: The Device must be rooted first)
finished. total time: 0.001s
FASTBOOT Output: sending 'boot' (5760 KB)...
FAILED (remote: The Device must be rooted first)
finished. total time: 0.001s
Please check the log before rebooting into system
Am I doing it wrong? Please help...
Kirizu said:
I have an xperia ray (ST18i) and it is stuck on sony/sony ericsson logo forever. I already flashed many versions of stock roms (using flashtool) and nothing worked. If I flash an old rom (4.0.2.A.0.62) it will display sony ericsson and if I install a newer rom (4.1.B.0.587) or update vita pc companion/sus it will display the sony logo and hang there until the battery is removed or dead.
My device has a locked bootloader and is not rooted and I want to install a custom kernel/pre rooted kernel to install custom roms via CWM hoping it would solve my problem. So I unlocked my bootloader booted into fastmode and attempted to flash a pre rooted kernel but it says:
Flashing selected kernel
sending 'boot' (5760 KB)...
FAILED (remote: The Device must be rooted first)
finished. total time: 0.001s
FASTBOOT Output: sending 'boot' (5760 KB)...
FAILED (remote: The Device must be rooted first)
finished. total time: 0.001s
Please check the log before rebooting into system
Am I doing it wrong? Please help...
Click to expand...
Click to collapse
are you sure that you have unlocked bootloader?
type *#*#7378423#*#* ( *#*#service#*#* )and see what it says.
if it is bootloader unlocked : yes then continue
if it is bootloader unlock allowed : yes then go unlock the bootlaoder first
mnishamk said:
are you sure that you have unlocked bootloader?
type *#*#7378423#*#* ( *#*#service#*#* )and see what it says.
if it is bootloader unlocked : yes then continue
if it is bootloader unlock allowed : yes then go unlock the bootlaoder first
Click to expand...
Click to collapse
My device is stuck at the boot logo so i can't enter those..
I unlocked my bootloader by using the flashtool and entering a code which I think is the official way of unlocking..
Kirizu said:
My device is stuck at the boot logo so i can't enter those..
I unlocked my bootloader by using the flashtool and entering a code which I think is the official way of unlocking..
Click to expand...
Click to collapse
Are you sure you tried to flash a kernel made for your device? And are you sure the bootloader got unlocked?
I guess your phone has a major problem and you can't solve it by flashing stuff/etc
Sent from my Nexus 4 running Android 4.2.2
Yes i am sure that the kernels/roms that I flash are compatible with my device, I got it from the help threads on xperia ray android development.
Already downloaded 4+ stock roms and kernels.. Tried sus/pc companion..
Now I am having doubts if I really unlocked my bootloader, because all the threads I read requires the device to be on for ticking/activating some things like usb debugging, and I did unlock mine while it is only one flash mode as I cant get past sony logo..
I am starting to think of bringing my phone to a service center, but i dont know if they are accepting repairs for phones not covered in service warranty..

Error Booting CWM

Hi Everyone,
First I apologize if this isn't the right place to post this, please move it to the correct forum if it's not.
I have a Asus TF700 (running the latest Asus firmware) the, warranty just ran out so I figured it was time to unlock and play with some custom roms.
I got it unlocked using the Asus bootloader tool, I went to install CWM using fastboot and it seemed to go OK but then when I went to reboot the bootloader it failed giving me a write failure. Now when I try to boot up recovery it briefly shows the android guy in working mode then goes to the error with the android laying on his back.
Here is my commands with fastboot:
C:\adb>adb reboot bootloader
C:\adb>fastboot flash recovery recovery.img
sending 'recovery' (6688 KB)...
OKAY [ 2.483s]
writing 'recovery'...
OKAY [ 2.409s]
finished. total time: 4.893s
C:\adb>fastboot reboot-bootloader
rebooting into bootloader...
FAILED (command write failed (Unknown error))
finished. total time: 0.636s
C:\adb>adb reboot bootloader
error: device not found
And that's it, I'm a bit stumped not sure how to fix it so I can move onto installing the roms, any help would be greatly appreciated.
Anyone?
DId you install the Google USB driver?
If don't,please install the Android SDK and install all.
packyy said:
DId you install the Google USB driver?
If don't,please install the Android SDK and install all.
Click to expand...
Click to collapse
Yes, if I hadn't then I wouldnt have been able to use fastboot or install CWM.
No one? I thought this was the android super stars forum.
Can someone at lease suggest another forum with people willing to help?
Not a single person willing to help me out? Wow, thanks.

Xperia z2 tablet rooted but locked - can't install ROM...

Hi,
I've got an Xperia Z2 tablet (SGP511) and am attempting to install Cyanogenmod 12.1 on it. Unfortunately no matter what I try I can't get there following the instructions on the Cyanogenmod website.
When I try to unlock the bootloader using Flashtool (which I thought was already unlocked as i've previously had CM installed but went back to stock) I get the response: FAILED (remote: Command did not succeed).
When I try to unlock the bootloader using Terminal, I get FAILED (remote: Device is already rooted).
So then, assuming the device is already rooted, I try flashing the boot.img file in the steps on the site, and I get sending 'boot' (14160 KB)...
OKAY [ 0.447s]
writing 'boot'...
FAILED (remote: Command not allowed).
So i'm completely lost. I'd really like some help on this and hope someone can give me their time.
Thanks!

Help please?????

Hi all,
Today I tried to root my LG G5 H830 but with an older method for Marshmallow(in the video i was watching the version wasn't even specified so I was unaware and I believed that the version of the phone did not really matter). I proceeded to follow this man's instructions @: "How to Root T-Mobile LG G5!" by "Max Lee" on Youtube(as a new user i cannot post links ) I unlocked my bootloader, got drivers and followed his instructions up onto an error on LGUP. Basically the error's purpose was to tell me that Nougat is not supported. So I had no choice but to reboot my phone and go through the android initializing setup.
After realizing the error of my ways I then found this post here via Google Search: "Install TWRP Recovery and Root LG G5 on Android Nougat | DroidViews" to install TWRP. Now my bootloader is unlocked and I have no root. The only problem here is that whenever I go into developer options and try to toggle 'OEM unlock' on it won't let me. The OEM unlock setting is grey-ed out and I am unable to toggle it!! This is what I need help with! Although my bootloader is very much infact unlocked I think some error occurred to where now I cant toggle my OEM unlock thus I am unable to flash a TWRP recovery via fastboot!
If I reboot into my bootloader and run the command "fastboot flash recovery recovery.img" i get this:
Code:
target reported max download size of 536870912 bytes
sending 'recovery' (18668 KB)...
OKAY [ 0.419s]
writing 'recovery'...
FAILED (remote: unknown command)
finished. total time: 0.435s
I even ignored the error and tried to boot into recovery manually and i just get the stock recovery.
Please help me guys
What about locking the bootloader again and unlocking it after that with the newer video you used?
MAGNVM said:
Hi all,
Today I tried to root my LG G5 H830 but with an older method for Marshmallow(in the video i was watching the version wasn't even specified so I was unaware and I believed that the version of the phone did not really matter). I proceeded to follow this man's instructions @: "How to Root T-Mobile LG G5!" by "Max Lee" on Youtube(as a new user i cannot post links ) I unlocked my bootloader, got drivers and followed his instructions up onto an error on LGUP. Basically the error's purpose was to tell me that Nougat is not supported. So I had no choice but to reboot my phone and go through the android initializing setup.
After realizing the error of my ways I then found this post here via Google Search: "Install TWRP Recovery and Root LG G5 on Android Nougat | DroidViews" to install TWRP. Now my bootloader is unlocked and I have no root. The only problem here is that whenever I go into developer options and try to toggle 'OEM unlock' on it won't let me. The OEM unlock setting is grey-ed out and I am unable to toggle it!! This is what I need help with! Although my bootloader is very much infact unlocked I think some error occurred to where now I cant toggle my OEM unlock thus I am unable to flash a TWRP recovery via fastboot!
If I reboot into my bootloader and run the command "fastboot flash recovery recovery.img" i get this:
Code:
target reported max download size of 536870912 bytes
sending 'recovery' (18668 KB)...
OKAY [ 0.419s]
writing 'recovery'...
FAILED (remote: unknown command)
finished. total time: 0.435s
I even ignored the error and tried to boot into recovery manually and i just get the stock recovery.
Please help me guys
Click to expand...
Click to collapse
Did you try to run the terminal/cmd as an administrator/root?
Sent from my LG-H840 using Tapatalk

Help please??

Hi all,
Today I tried to root my LG G5 H830 but with an older method for Marshmallow(in the video i was watching the version wasn't even specified so I was unaware and I believed that the version of the phone did not really matter). I proceeded to follow this man's instructions @: "How to Root T-Mobile LG G5!" by "Max Lee" on Youtube(as a new user i cannot post links ) I unlocked my bootloader, got drivers and followed his instructions up onto an error on LGUP. Basically the error's purpose was to tell me that Nougat is not supported. So I had no choice but to reboot my phone and go through the android initializing setup.
After realizing the error of my ways I then found this post here via Google Search: "Install TWRP Recovery and Root LG G5 on Android Nougat | DroidViews" to install TWRP. Now my bootloader is unlocked and I have no root. The only problem here is that whenever I go into developer options and try to toggle 'OEM unlock' on it won't let me. The OEM unlock setting is grey-ed out and I am unable to toggle it!! This is what I need help with! Although my bootloader is very much infact unlocked I think some error occurred to where now I cant toggle my OEM unlock thus I am unable to flash a TWRP recovery via fastboot!
If I reboot into my bootloader and run the command "fastboot flash recovery recovery.img" i get this:
Code:
target reported max download size of 536870912 bytes
sending 'recovery' (18668 KB)...
OKAY [ 0.419s]
writing 'recovery'...
FAILED (remote: unknown command)
finished. total time: 0.435s
I even ignored the error and tried to boot into recovery manually and i just get the stock recovery.
Please help me guys
duplicate thread >>> original here https://forum.xda-developers.com/lg-g5/help/help-please-t3601192
thread closed

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