Database Develop

[Q] Recovery via ADB ?

Is there a possibility to enter stock recovery via USB cable and ADB in SW Upgrade Mode?
Can anyone check this as my phone is in repair centre?
1. Turn off the phone
2. Connect USB cable with Vol+ button (phone enters in SW Update mode)
3. Open command prompt and from ADB folder type "adb reboot recovery"
4. Is this working?
I'll be very grateful if someone would check this. Thanks in advance.

Please, it is very urgent. If it works I could today pick-up phone from my Operator before they send it to repair. They're sending it tommorow.
Much thanks and sorry for double posting...
EDIT:
@fjsw: thanks for checking.

No it doesn't work
output:
error: device not found

I'm in recovery...
I turned on my bricked OB, waiting for bootloop, plug USB and "adb reboot recovery"
Sorry for my bad english
edit: I inserted some files from Nova v8zip to CM7-SelfKANG4.zip and flashed this edited CM.zip... Bootloop, plug USB and "adb reboot recovery" .. but, I flashed again CM.zip, now no-edited, reboot system from recovery and i got Error sreen.. So I flash firmware with http://forum.xda-developers.com/showthread.php?t=1111771

AFAIK it doesn't work. I tried it too (when i bricked my OB {CM7-->stock} but it didn't work!

Wow it's been an "old-time" thread to reply, since the first post August 7, 2011. yet it still replied today.
AFAIK, "Android Debug Bridge" need operating system to run (to debug). It need USB Debugging that running with Android, so ADB can't run without Android OS running..
CMIIW.

redy2006 said:
Wow it's been an "old-time" thread to reply, since the first post August 7, 2011. yet it still replied today.
AFAIK, "Android Debug Bridge" need operating system to run (to debug). It need USB Debugging that running with Android, so ADB can't run without Android OS running..
CMIIW.
Click to expand...
Click to collapse
Exactly. I think AntoSVK isn't right. He should edit his post and accurately describe his case...

How to unlock Lg-Ku5900.
radkor said:
Exactly. I think AntoSVK isn't right. He should edit his post and accurately describe his case...
Click to expand...
Click to collapse
How to unlock Lg-Ku5900 .Screen, must enter your email and password.

kanokphone said:
How to unlock Lg-Ku5900 .Screen, must enter your email and password.
Click to expand...
Click to collapse
Do a search before you post...
http://forum.xda-developers.com/showthread.php?t=1448803
This also will remove phone lock if you forget unlock code or pattern.
Click to expand...
Click to collapse

[Tutorial] Unlocking BootLoader

How To Unlock BootLoader...
Information:
1: You MAY void your warranty!
2: Unlocking bootloader will result in data loss! Be sure to backup! (SD-Card won't be affected)
Click to expand...
Click to collapse
Other Info:
So I've never seen any Tutorial on this for Xperia V and decided to make one!
Click to expand...
Click to collapse
Step 1: Download 'Xperia V Unlocked BootLoader.zip' from here ---> http://www.mediafire.com/?hn1n73rfi6dapw0
Step 2: Extract the file you downloaded above on your PC. You’ll get the following three files:
1: drivers.zip
2: fastboot_with_Android_USB_file.zip
3: unlockbootloader.sonymobile.com
Click to expand...
Click to collapse
Step 3: Head over to 'unlockbootloader.sonymobile.com'
1: This will open a web page in your default browser. Scroll to the bottom of the Instructions on the page and you’ll see a link like “Continue”, click on it.
2: In the pop-up window click “Yes, I’m sure” and then in the next window click on both the checkboxes, and then click “I accept”.
Click to expand...
Click to collapse
Step 4: Now insert the details as per the instructions
Remember! IMEI can be found by entering *#06# in the phone application!
Click to expand...
Click to collapse
Step 5: You’ll get a KEY to unlock boot loader. The KEY can be found in your inbox. Write it down somewhere you can remember, it will be used later.
Step 6: Extract everything in step 2 into a folder
Step 7: Put your phone into fastboot mode
Turn your phone off. Press and hold Volume Up button while plugging your phone into your PC. A blue LED will come on
Click to expand...
Click to collapse
Step 8: Install your device driver
1: Search 'Device Manager' in the start menu
2: Right click your device (Should be S1Boot Fastboot OR Android Phone)
3: Click 'Update Driver'
4: Locate the driver folder (Remember to extract 'driver.zip')
5: It will automatically install
Click to expand...
Click to collapse
Step 9: Now extract the fastboot_with_Android_USB_file.zip
Step 10: In the same folder as the extracted content of fastboot_with_Android_USB_file.zip, open command promt
Hold Shift while right-clicking in the folder and select 'Open Command Promt'
Click to expand...
Click to collapse
Step 11: Here is the important part. Type these commands to unlock your bootloader!
1: Type in fastboot.exe -i 0x0fce getvar version
2: It should return a value like “0.5”. This ensures that your device is correctly connected
3: Now type in fastboot.exe -i 0x0fce oem unlock 0xKEY
Important! Remember the code you recieved? Replace KEY with that
Click to expand...
Click to collapse
Step 12: Let it run and when it is finished, your phone's bootloader should be unlocked!
That's it from me! Please leave a comment if i have done anything wrong. (First Tutorial post by the way )

hey
can you use this tool to unlock this phone ?
http://forum.xda-developers.com/showthread.php?t=1794800

cs098 said:
can you use this tool to unlock this phone ?
http://forum.xda-developers.com/showthread.php?t=1794800
Click to expand...
Click to collapse
I cant see why it shouldnt.
kartobot said:
Just a GUI version of the official thing.
Click to expand...
Click to collapse
It does afterall do exactly the same as if you do it manually, except you dont have to do it.. manually.
Pretty handy tool !

How do we find out if my V is unlocked?

cire1980 said:
How do we find out if my V is unlocked?
Click to expand...
Click to collapse
If you haven't unlocked it.. Then it's most probably locked

I mean, I've already done all the steps, and it appeared to be successful. But where in the phone could we see that the bootloader is unlocked?

cire1980 said:
I mean, I've already done all the steps, and it appeared to be successful. But where in the phone could we see that the bootloader is unlocked?
Click to expand...
Click to collapse
well if you think it's unlocked, try flashing a ROM and a kernel, if it works, its unlocked, if doesn't then tough luck

Just try and get Superuser and busybox. It shouldn't work on locked bootloaders
Sent from your backyard...
Slender watches what you do...

cire1980 said:
How do we find out if my V is unlocked?
Click to expand...
Click to collapse
Dial *#*#7378423#*#*. Go to Service info → Configuration.
Bootloader unlock allowed - Yes: bootloader is locked. Unlock possible.
Bootloader unlock allowed - No: bootloader is locked. Unlock impossible.
Bootloader unlock - Yes: bootloader is unlocked.

Waiting for Device
Can you help I get waiting for device when command prompt when entering fastboot.exe -i 0x0fce getvar version.
So what the problem please?
---------- Post added at 09:48 PM ---------- Previous post was at 09:37 PM ----------
Darkfunnyguy said:
Can you help I get waiting for device when command prompt when entering fastboot.exe -i 0x0fce getvar version.
So what the problem please?
Click to expand...
Click to collapse
I manage to get it to work by reconnect the cable.
My Xperia V is now unlocked. :good::good::good::good:

Darkfunnyguy said:
Can you help I get waiting for device when command prompt when entering fastboot.exe -i 0x0fce getvar version.
So what the problem please?
---------- Post added at 09:48 PM ---------- Previous post was at 09:37 PM ----------
I manage to get it to work by reconnect the cable.
My Xperia V is now unlocked. :good::good::good::good:
Click to expand...
Click to collapse
....And when unlocked, did Mobile Bravia Engine 2 still works? Try to BE off then make a screenshot, the same goes to when BE is on. Make a comparison. This is a known bug for 2012 Xperia phones. Did Xperia V included?

SlenderMan,
I urged you to edit your thread to warn people if they decide to unlock the bootloader of their Xperia V smartphone. On my Walkman app you will get a security error when trying download music info. Yet I tried fixing but to no avail by using this thread:-
http://forum.xda-developers.com/showthread.php?t=2006356
Also tried this :-
1.Move CredentialManagerService.apk from /system/app to your SD card.
2.Reboot your phone.
3.Move back CredentialManagerService.apk from SD card to /system/app
4.Change permissions to rw-r-r
5.Reboot your phone.
But still unsuccessful. I used the playerpro app anyway but to let you know this will happen to smartphone if they choose to unlock their bootloader.
---------- Post added at 12:24 AM ---------- Previous post was at 12:21 AM ----------
I think my Mobile Bravia Engine 2 is fine but it broke the download music info using the walkman app.

Solved the download music info (security error)
I managed to solved the download music info for the walkman and it think it also fixed the mobile bravia engine 1/2 using this method by clicking on link below :-
http://forum.xda-developers.com/showthread.php?t=2068225

Stuck at command prompt waiting for the device. I dont know what mistake i made. Pls help.
Sent from my LT25i using xda premium

Did you enable Fastboot? Volume up and connect USB cord.

shaldi said:
Stuck at command prompt waiting for the device. I dont know what mistake i made. Pls help.
Sent from my LT25i using xda premium
Click to expand...
Click to collapse
1: Make sure you connect correctly - Hold Vol. Up and Plug In
2: Make sure you have drivers installed correctly - Search at Start Menu -> Device Manager

Gasai Yuno said:
Dial *#*#7378423#*#*. Go to Service info → Configuration.
Bootloader unlock allowed - No: bootloader is locked. Unlock impossible.
Click to expand...
Click to collapse
Is it 100% impossible to unlock the phone?
Is there no other way?
Because I really need to use a different SIM on my phone.

jon1011 said:
Is it 100% impossible to unlock the phone?
Is there no other way?
Because I really need to use a different SIM on my phone.
Click to expand...
Click to collapse
I think there's a way. By using testpoints. But i'm not sure if it's available for the V

I got some troubles in step 7&8.
I switch the phone off.
I push and hold the volume up button to enter "fastboot".
The blue LED will turn on and then the first time I got a message that drivers where missing and I closed that message.
But then the blue LED turned off and I only can find "Sony USB storage" in my device manager.
I tried it several times again and now every time I enter "fastboot" the blue LED will only stay on for about 10 seconds.
I can not find the device (S1_fastboot or Android Phone) fast enough before the blue LED turns off and then I can only find again the "Sony USB storage" device.
Deleted the drivers of the device "Sony USB storage", but then after I enter fastboot (blue LED turns on) and the blue LED turns off again it will automatically install these drivers again (because I suppose as soon as the blue LED turns off I leave the "fastboot" mode).
Any suggestions anybody.
Please advice.
---------- Post added at 02:48 PM ---------- Previous post was at 01:50 PM ----------
pow3rflow3r said:
I got some troubles in step 7&8.
I switch the phone off.
I push and hold the volume up button to enter "fastboot".
The blue LED will turn on and then the first time I got a message that drivers where missing and I closed that message.
But then the blue LED turned off and I only can find "Sony USB storage" in my device manager.
I tried it several times again and now every time I enter "fastboot" the blue LED will only stay on for about 10 seconds.
I can not find the device (S1_fastboot or Android Phone) fast enough before the blue LED turns off and then I can only find again the "Sony USB storage" device.
Deleted the drivers of the device "Sony USB storage", but then after I enter fastboot (blue LED turns on) and the blue LED turns off again it will automatically install these drivers again (because I suppose as soon as the blue LED turns off I leave the "fastboot" mode).
Any suggestions anybody.
Please advice.
Click to expand...
Click to collapse
Ok it worked. I just had 10 seconds to install the driver as long as fastboot was "activated" (blue LED was on).
I had to do this in 3 times.
First to see in device manager where the device would appear (S1 fastboot).
Then to "right click" the device and select install driver. Select the driver folder.
Then again in fastboot and installed driver.

Darkfunnyguy said:
SlenderMan,
I urged you to edit your thread to warn people if they decide to unlock the bootloader of their Xperia V smartphone. On my Walkman app you will get a security error when trying download music info. Yet I tried fixing but to no avail by using this thread:-
http://forum.xda-developers.com/showthread.php?t=2006356
Also tried this :-
1.Move CredentialManagerService.apk from /system/app to your SD card.
2.Reboot your phone.
3.Move back CredentialManagerService.apk from SD card to /system/app
4.Change permissions to rw-r-r
5.Reboot your phone.
But still unsuccessful. I used the playerpro app anyway but to let you know this will happen to smartphone if they choose to unlock their bootloader.
---------- Post added at 12:24 AM ---------- Previous post was at 12:21 AM ----------
I think my Mobile Bravia Engine 2 is fine but it broke the download music info using the walkman app.
Click to expand...
Click to collapse
Weird? Everything that didn't work for you worked for me with unlocked bootloader.

Video tutorial for root and unlock bootloader on JB 4.1.2

I have seen that many people in this forum not understand wery well tutorial of rooting and unlocking bootloader on JB 4.1.2 .Anybody whant to upload video tutorial so anyone here understand this better?THANX AND GREETINGS
Video- http://www.youtube.com/watch?v=sBeirPeT2rQ&feature=youtu.be and youtube channel http://www.youtube.com/user/droid4youTV
Thanx to nbock97

igorstoja83 said:
I have seen that many people in this forum not understand wery well tutorial of rooting and unlocking bootloader on JB 4.1.2 .Anybody whant to upload video tutorial so anyone here understand this better?THANX AND GREETINGS
Click to expand...
Click to collapse
+1 thx!

im stuck on the unlocking bootloader so +1

In the console say unlock bootloader,but on the pone say lock
Why?
Enviado desde mi LG-P880 usando Tapatalk 2

tiflao said:
In the console say unlock bootloader,but on the pone say lock
Why?
Enviado desde mi LG-P880 usando Tapatalk 2
Click to expand...
Click to collapse
+1..
please upload a video to unlock bootloader

I want that too..
jitesh22 said:
+1..
please upload a video to unlock bootloader
Click to expand...
Click to collapse
+1

+1
Oppa Gangnam Bootlooder Unlock Style

http://www.youtube.com/watch?v=sBeirPeT2rQ&feature=youtu.be
by nbock97
Thx!

cheers for the video, when you use the volume down button to choose unlock it, do you then press the power button once to select it

When I type adb reboot-bootloader it reboots but stays on LG logo???

nedooo said:
When I type adb reboot-bootloader it reboots but stays on LG logo???
Click to expand...
Click to collapse
That is normal. Your phone is on fastboot mode so you need update driver fastboot properly (driver from china) Then you type adb fastboot oem unlock and use vol - to chose unlock, press power, wait just a moment then remove battery. That's all
Sent from my LG-P880 using xda premium

dracula3020 said:
That is normal. Your phone is on fastboot mode so you need update driver fastboot properly (driver from china) Then you type adb fastboot oem unlock and use vol - to chose unlock, press power, wait just a moment then remove battery. That's all
Sent from my LG-P880 using xda premium
Click to expand...
Click to collapse
Maybe for you, same crap here over and over again...this is all messed, and on top of this there is a factory version string mess
Screw this, and for what, just to see unlocked??? There is nothing special to gain at the moment...sorry dracula I quoted your post it is not pointed at you...cyaa :silly:

AW: Video tutorial for root and unlock bootloader on JB 4.1.2
would be nice if you could add my video to your first post so that everyone can find it quickly!
http://www.youtube.com/#/watch?v=sBeirPeT2rQ&desktop_uri=/watch?v=sBeirPeT2rQ&gl=DE
btw I made a channel for videos like this there you can also find all videos which I made before about the 4X HD as a PLAYLIST IN DESCRIPTION OF FIRST VIDEO
look here: www.youtube.com/user/droid4youTV
Sent from my LG-P880 using xda app-developers app

nbock97 said:
would be nice if you could add my video to your first post so that everyone can find it quickly!
http://www.youtube.com/#/watch?v=sBeirPeT2rQ&desktop_uri=/watch?v=sBeirPeT2rQ&gl=DE
btw I made a channel for videos like this there you can also find all videos which I made before about the 4X HD as a PLAYLIST IN DESCRIPTION OF FIRST VIDEO
look here: www.youtube.com/user/droid4youTV
Sent from my LG-P880 using xda app-developers app
Click to expand...
Click to collapse
OK i doo this THANX :good:

nedooo said:
When I type adb reboot-bootloader it reboots but stays on LG logo???
Click to expand...
Click to collapse
+1
---------- Post added at 12:28 AM ---------- Previous post was at 12:15 AM ----------
Please, I need the solution for the problem " When I type adb reboot-bootloader it reboots but stays on LG logo " .. Step by Step where and how to fix this sh*it lol
Best regards,

AW: Video tutorial for root and unlock bootloader on JB 4.1.2
ozeer said:
+1
---------- Post added at 12:28 AM ---------- Previous post was at 12:15 AM ----------
Please, I need the solution for the problem " When I type adb reboot-bootloader it reboots but stays on LG logo " .. Step by Step where and how to fix this sh*it lol
Best regards,
Click to expand...
Click to collapse
what happens if you just go on with command 2?
someone on german forum also had this problem, another user said that that's because the fastboot drivers are missing but the user with the problem didn't report back:/
Sent from my LG-P880 using xda app-developers app

ozeer said:
+1
---------- Post added at 12:28 AM ---------- Previous post was at 12:15 AM ----------
Please, I need the solution for the problem " When I type adb reboot-bootloader it reboots but stays on LG logo " .. Step by Step where and how to fix this sh*it lol
Best regards,
Click to expand...
Click to collapse
That is how it should be.Now in that state type fastboot device.
If there is not any listed you have problem with fastboot drivers.
Leave it that way and open on PC device manager and find one saying fastboot with yellow triangle, rigt click and do manual update of driverd pointing to extracted folder in attachment.
Install and in cmd window type fastboot devices to confirm it is ok, now type fastboot oem unlock and on phone select unlock with volume keys and confirm with power button. If you have that version that shows software version EUR-XXX it will wipe pone and unlock bootloader.

nedooo said:
That is how it should be.Now in that state type fastboot device.
If there is not any listed you have problem with fastboot drivers.
Leave it that way and open on PC device manager and find one saying fastboot with yellow triangle, rigt click and do manual update of driverd pointing to extracted folder in attachment.
Install and in cmd window type fastboot devices to confirm it is ok, now type fastboot oem unlock and on phone select unlock with volume keys and confirm with power button. If you have that version that shows software version EUR-XXX it will wipe pone and unlock bootloader.
Click to expand...
Click to collapse
thanks for the driver package .. you are right for that I have problem with "fastboot" from PC device management .. now, My mobile phone has unlocked bootloader
thanks nbock97 for your video tutorial and nedooo for driver package
Best regards,

AW: Video tutorial for root and unlock bootloader on JB 4.1.2
Originally Posted by nedooo
That is how it should be.Now in that state type fastboot device.
If there is not any listed you have problem with fastboot drivers.
Leave it that way and open on PC device manager and find one saying fastboot with yellow triangle, rigt click and do manual update of driverd pointing to extracted folder in attachment.
Install and in cmd window type fastboot devices to confirm it is ok, now type fastboot oem unlock and on phone select unlock with volume keys and confirm with power button. If you have that version that shows software version EUR-XXX it will wipe pone and unlock bootloader.
Click to expand...
Click to collapse
thanks for the driver package .. you are right for that I have problem with "fastboot" from PC device management .. now, My mobile phone has unlocked bootloader
thanks nbock97 for your video tutorial and nedooo for driver package
Best regards,
Click to expand...
Click to collapse
nice to know I'll add this later to thr video ! thanks
Sent from my LG-P880 using xda app-developers app

Hello there,
My problem is is that I was running v10e (BRAZIL) and flashed v20a. I don't see the EUR-xxx, I see P880020a-724-06.
I can't unlock my bootloader...is there a way to get to EUR-xxx?

[Q] Help unbrick device

After installing Vanir, I don't know what went wrong !!! it was freezing then after trying to charge it, it bricked!!!!
I searched the forume and found major two ways
FIRST
RuedasLucas Here :
http://forum.xda-developers.com/showthread.php?t=1932123
i followed the info. correctly and stuck in the same problem the man in the thread have, I am stuck in LG logo
so i tied the second
http://forum.xda-developers.com/showpost.php?p=40174748&postcount=9&nocache=1
and i am stuck in installing " LGmobile Support Tool " because i am in windows 8 and it is not compitable with it. every time trying to install it seems not responding.
so i am stuck now and donot know how to unbrick it !!! no one tell me to set up win 7 because i donot have one

The LG support tool works fine on my Windows 8 64-bit version. Look for the thread on 'Flashing a KDZ with pictures' and follow it to the letter.

did u install gapps ? vanir installation never had a problem. about windows 8 x64 i can confirm the support tool is working because i had them some months ago ( now im on ubuntu x64 ).
and its not a good idea if on some little mistake u try go back to stock. the reason u tried flash vanir was to go away from stock. if u flash back to stock then in a few days will want to flash again a custom. so try again and do it right !
also dont take off battery. no need. maybe this battery trick is history. i never did that. i just long pressed power to reboot and then i just pressed a few times the vol down ( not hold ).

SimonTS said:
The LG support tool works fine on my Windows 8 64-bit version. Look for the thread on 'Flashing a KDZ with pictures' and follow it to the letter.
Click to expand...
Click to collapse
Actually i did this before posting from that thread
http://forum.xda-developers.com/showthread.php?t=2069723
between step 3 and 4 it give me " app. not responding "

kessaras said:
did u install gapps ? vanir installation never had a problem. about windows 8 x64 i can confirm the support tool is working because i had them some months ago ( now im on ubuntu x64 ).
and its not a good idea if on some little mistake u try go back to stock. the reason u tried flash vanir was to go away from stock. if u flash back to stock then in a few days will want to flash again a custom. so try again and do it right !
also dont take off battery. no need. maybe this battery trick is history. i never did that. i just long pressed power to reboot and then i just pressed a few times the vol down ( not hold ).
Click to expand...
Click to collapse
i didn't catch it. But if u mean i reflash vanir, The mobile is " dead now !!!! " so i must unbrick to any firmware then reflash

arrivals18 said:
Actually i did this before posting from that thread
http://forum.xda-developers.com/showthread.php?t=2069723
between step 3 and 4 it give me " app. not responding "
Click to expand...
Click to collapse
Try disabling any anti-virus first just to make sure that's not interfering. I've never heard of the proces freezing there before.

SimonTS said:
Try disabling any anti-virus first just to make sure that's not interfering. I've never heard of the proces freezing there before.
Click to expand...
Click to collapse
Ok is the tool take some time to load if internet connection is not good ?!!

arrivals18 said:
Ok is the tool take some time to load if internet connection is not good ?!!
Click to expand...
Click to collapse
It shouldn't make any real difference, no.

arrivals18 said:
Actually i did this before posting from that thread
http://forum.xda-developers.com/showthread.php?t=2069723
between step 3 and 4 it give me " app. not responding "
Click to expand...
Click to collapse
You did disable the Modem, right? And sometimes, the process seems to take a little long. You have to be patient.
Sent from my Optimus 4X HD using XDA Premium 4 mobile app

arrivals18 said:
i didn't catch it. But if u mean i reflash vanir, The mobile is " dead now !!!! " so i must unbrick to any firmware then reflash
Click to expand...
Click to collapse
mmmmmm.... if at the end u cant do anything and since, propably, your bootloader is unlocked , u can reinstall the recovery using the adb ( use cmd: adb reboot bootloader and then, when u are there , hit: adb install [recovery zip file path/name] ). eh the rest u know them so u dont need to use any kdz and tire urself with that boring procedure

SimonTS said:
It shouldn't make any real difference, no.
Click to expand...
Click to collapse
Ok i already installed win. 7 and installed the tool that take really short time.
i connect the phone to usb in the mode and choose in the tool " recover from wrong update " it downloaded nearly 573 mb. and installed it in the phone, and when the phone restarts, the phone sticks in LG logo . SO what now !!!!!!!
[email protected] said:
You did disable the Modem, right? And sometimes, the process seems to take a little long. You have to be patient.
Yep. every thing ok as u see.
Sent from my Optimus 4X HD using XDA Premium 4 mobile app
Click to expand...
Click to collapse
kessaras said:
mmmmmm.... if at the end u cant do anything and since, probably, your bootloader is unlocked , u can re-install the recovery using the adb ( use cmd: adb reboot bootloader and then, when u are there , hit: adb install [recovery zip file path/name] ). eh the rest u know them so u dont need to use any kdz and tire urself with that boring procedure
Click to expand...
Click to collapse
Yep. This may happened, when i opened the bootloader i use the code 3845#*880#>Boatloader>check boatloader> Unlock,
soi knew that it's unlocked. Am i wrong ? Guys i done both the first and the second method and all stuck in LG logo
in the first i used V20C_00.kdz and did the rights steps and also stuck !!!! so what now !!!!!!!!!!!!!!11

arrivals18 said:
Ok i already installed win. 7 and installed the tool that take really short time.
i connect the phone to usb in the mode and choose in the tool " recover from wrong update " it downloaded nearly 573 mb. and installed it in the phone, and when the phone restarts, the phone sticks in LG logo . SO what now !!!!!!!
Yep. This may happened, when i opened the bootloader i use the code 3845#*880#>Boatloader>check boatloader> Unlock,
soi knew that it's unlocked. Am i wrong ? Guys i done both the first and the second method and all stuck in LG logo
in the first i used V20C_00.kdz and did the rights steps and also stuck !!!! so what now !!!!!!!!!!!!!!11
Click to expand...
Click to collapse
Try to flash V20A with LG Flash Tool and to unlock the bootloader this:
http://www.4shared.com/rar/HFf4newq/LGO4X-UNLOCK-BOOTLOADER.html
Hope it helps, I unlock mine with that, tooked me a few tries...

arrivals18 said:
Ok i already installed win. 7 and installed the tool that take really short time.
i connect the phone to usb in the mode and choose in the tool " recover from wrong update " it downloaded nearly 573 mb. and installed it in the phone, and when the phone restarts, the phone sticks in LG logo . SO what now !!!!!!!
Click to expand...
Click to collapse
The first thing to do if it sticks on the LG Logo is to boot into the LG recovery and do a factory reset - just to make sure. You often have to do this after flashing a new KDZ anyway.

RuedasLocas said:
Try to flash V20A with LG Flash Tool and to unlock the bootloader this:
http://www.4shared.com/rar/HFf4newq/LGO4X-UNLOCK-BOOTLOADER.html
Hope it helps, I unlock mine with that, tooked me a few tries...
Click to expand...
Click to collapse
OK look what i did :
1- connect device with usb cable and holding vol- till it get s/w update
2-when pressing adb reboot bootloader command it gives me unknown error
3- fastboot oem unlock : it gives me device not found
Also tried :
1- connect device to usb cable with holding power+ vol+ to recover mode
2-when pressing adb reboot bootloader command its ok
3- fastboot oem unlock : it gives me FAILED (command write failed (Unknown error))
finished. total time: 0.587s

SimonTS said:
The first thing to do if it sticks on the LG Logo is to boot into the LG recovery and do a factory reset - just to make sure. You often have to do this after flashing a new KDZ anyway.
Click to expand...
Click to collapse
HOW ?!!!!!!!!
when pressing power with vol+ it gives me the message " This mode is for data backup at service center. After removing and reattachment of battery press power key to reboot and keep using phone" so what how can wipe date/factory reset ?

Power and vol-, not+

Flying_Bear said:
Power and vol-, not+
Click to expand...
Click to collapse
yep yep yep it's done and now i see the rom >>> now can i root unlock bootloader flash to vanir or not ?

arrivals18 said:
yep yep yep it's done and now i see the rom >>> now can i root unlock bootloader flash to vanir or not ?
Click to expand...
Click to collapse
i told you earlier at my post here , that you dont need to flash kdz and go back to stock if ur final goal is a custom rom. u could reinstall recovery using adb bootloader. nevermind -_- u just do things harder for u. bootloader is unlocked u cant unlock the unlocked. bootloader isnt locking again when u just force the stock rom in. there is another procedure u must do to lock it. u can install recovery ( if u havent ) and just install a custom rom
EDIT: you dont need this anymore but ill explain.
adb is used to force files into the device. its a way to communicate with the phone using the pc. u can use the adb to install whatever u like but if u are not sure that the thing u are trying to install is ok for the device, then u will have a problem.
so , since your bootloader is already unlocked, you can go in adb bootloader and force the recovery in.
open cmd:
Lets say i use the teamwin recovery. ill rename it to be easy and save it to desktop. my file is: recovery.zip
open cmd as administrator and go to desktop: cd .....[path to ur desktop]
1. adb start-server
2. adb reboot bootloader
3. fastboot fash recovery recovery.zip
thats it. 3 commands is 10 seconds work. u dont need to go back to stock rom to install a custom rom.

Bootloop - Help - Xiaomi Mi A2

Here we go:
1- Today i got a new phone
2- Wanted to remove the Google search bar and disable google app
3- Restart and the phone screen is very different like another version, so i decide to do a soft reboot
4- Phone stuck on auto loop
5- Try recovery mode, dont work
6- Fastboot works
7- I download new room jasmine_global_images_V10.0.12.0.PDIMIXM_20190712.0000.00_9.0_1e580ee45b
8- Download Miflash and Minimal ADB and fastboot.
9- Plug the phone in pc
10- Unlocks OEM with app
11- Opened Mi flash
12- Miflash have installed all the drivers
13- When i click on refresh the Fastboot icon(the android and the soviet cat) dissapears and the only thing i have is in one corner "press any key to shutdown"
Important data:
-i have windows 10 with usb 3.1 and 2.0
-USB debugg is locked
-By pure luck once i managed to do a full boot sequence but when it finished the layout of the screen was different, like another version and i started updating it, after a couple of updates it stuck again on bootloop.
- i have no idea what was the original version on the room but in the last point and in nº 3 it was 10.0.7.
- i have nothing that i cannot recover so i dont mind wiping out my userdata
-i have considered a test point but i dont know if it going to work
-return it to amazon its my last ressort
- i read about the issues in december and january with the bootloop but i tried everything
-i have acces to a computer with linux
-its very difficult to start the fastboot logo/menu and almost impossible the recovery mode, it almost always ends with phone booting, when i plug it onto my pc it start with the bootloop.
-sometimes when i click on refresh while the phone with the screen in black or starting up with the android one logo it changes to fastloop automatically
- also tried a hard resset and nothing changed
I have no clue what to do, should i do the test point, ask for another in amazon, spray it with holy water??
Sorry for the possible typos and all the numbers i wanted to explain myself and to put some order in my head.
Please help and Thanks in advance

Fastboot rom
Try FASTBOOT method to unbrick your mi a2,

Karthickvel1988 said:
Try FASTBOOT method to unbrick your mi a2,
Click to expand...
Click to collapse
My PC does not recognize the phone and when i click on refresh the fastboot icon goes out and i can only se "pres any key to shutdown"

SrBisectriz said:
My PC does not recognize the phone and when i click on refresh the fastboot icon goes out and i can only se "pres any key to shutdown"
Click to expand...
Click to collapse
I think you should connect your phone via USB 2.0, from my previous experience, the USB 3.0 port will give press any key to shutdown message on your phone
Sent from my Mi A2 using Tapatalk

K9998 said:
I think you should connect your phone via USB 2.0, from my previous experience, the USB 3.0 port will give press any key to shutdown message on your phone
Sent from my Mi A2 using Tapatalk
Click to expand...
Click to collapse
Does the same
I gave up
Using the fastboot mode and the adb voids the warranty?

SrBisectriz said:
Does the same
I gave up
Using the fastboot mode and the adb voids the warranty?
Click to expand...
Click to collapse
In this case I think you haven't unlock your bootloader, or haven't unlock both OEM and critical. Following up your steps, you didn't mentioned this part.
Have you done these codes?
fastboot flashing unlock
And
fastboot flashing unlock_critical
?
Select OEM unlock in settings doesn't unlock your bootloader automatically
Sent from my Mi A2 using Tapatalk

K9998 said:
In this case I think you haven't unlock your bootloader, or haven't unlock both OEM and critical. Following up your steps, you didn't mentioned this part.
Have you done these codes?
fastboot flashing unlock
And
fastboot flashing unlock_critical
?
Select OEM unlock in settings doesn't unlock your bootloader automatically
Sent from my Mi A2 using Tapatalk
Click to expand...
Click to collapse
I tried these and only worked once or twice
But mi Flash did not recognise the phone

SrBisectriz said:
I tried these and only worked once or twice
But mi Flash did not recognise the phone
Click to expand...
Click to collapse
Mi flash required both unlock to do the work.
Sent from my Mi A2 using Tapatalk