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[Q] Screentouch doesnt work. Software?

Hi,
After a serious software problems (crashed with 4.0.3 OTA update) i managed install a ROM, but my screentouch doesnt respond to my touch. The screen and all buttons function very well but i cant put the pin because touchscreen doenst work.
Could it be Software or is definitely Hardware?

Could be software. Have you tried flashing a new ROM (and appropriately wiping beforehand)?

Have you tried to access to the recovery ? Some recoveries use the touchscreen as the TWRP for example

Harbb said:
Could be software. Have you tried flashing a new ROM (and appropriately wiping beforehand)?
Click to expand...
Click to collapse
I try do clean install a custom rom and 2.3.6 OTA and in both the touch doesnt work.
I install the touch recovery, but after dont work i install a regular one via fastboot.
Clean install (format system, wipe everything, etc) and nothing work.
Will continue try another custom roms

Cyrille28410 said:
Have you tried to access to the recovery ? Some recoveries use the touchscreen as the TWRP for example
Click to expand...
Click to collapse
I can acess to recovery sometimes
When it fails push it in PC via fastboot.

Now i cant enter in recovery and cant connect via usb to flash another recovery

I'm screwed!
I cant get into recovery, when i pressed appears a android toy whith a warning sine.
I cant connect to PC, when in bootloader and connect to PC, in bottom appears "fastboot fails invalid command".
I´ve installed a stock rom 2.3.6 and the touch screen doesn´t work to iniciate the phone. Try to install franco kernell but it´s the same situation.
When i can connect the phone to PC i´ve try´de 3 different custom roms and none works.
Going to warranty.

Looks like your touchscreen may have just given up. Everything else is normal, you probably don't have fastboot/adb setup properly and that warning sign is the stock recovery. I'd sort out fastboot and lock the bootloader before sending it in. Also, if you don't have a backup of your sdcard you can mount it through a custom recovery (use "fastboot boot recovery.img").

Harbb said:
Looks like your touchscreen may have just given up. Everything else is normal, you probably don't have fastboot/adb setup properly and that warning sign is the stock recovery. I'd sort out fastboot and lock the bootloader before sending it in. Also, if you don't have a backup of your sdcard you can mount it through a custom recovery (use "fastboot boot recovery.img").
Click to expand...
Click to collapse
I´ve format SD card and have nothing inside.
"I'd sort out fastboot and lock the bootloader before sending it in"
How can i do that?
Remember that i cant access to recovery or turn on by computer.

Read the rooting guide or check out NexusSHacks.com, all the info you'll need.

How are you "pushing" recoverys via fastboot if you don't have fast boot set up properly?
Anyways. Speaking of fastboot. Get the official fastboot images for your phone and flash them all. If you still have issues with the screen its a hardware problem.

You should make a full backup and then flash the official factory images (ICS 4.0.4), made for your hardware version, through fastboot. You can find the exact version beneath your battery on a sticker.
If the problem persists after this, it's most likely a HW problem.
If the mobile is not recognized in bootloader / fastboot mode, then connect it to a Linux PC, and then post here the output of the following commands (as root):
Code:
tail /var/log/messages
Code:
lsusb

albundy2010 said:
How are you "pushing" recoverys via fastboot if you don't have fast boot set up properly?
Anyways. Speaking of fastboot. Get the official fastboot images for your phone and flash them all. If you still have issues with the screen its a hardware problem.
Click to expand...
Click to collapse
When i was able to connect the phone to pc i push it with code flashboot flash recovery Some.img
Now i cant "push it".
I cant enter in fastboot

I´ve been able to enter in recovery.
Unroot and back to stock.
Now already of screentoch doent work, some buttons dont work.
Going to warranty. Thanks everyone for the effort.

[Q] TWRP problem

I want to root my tablet so I flashed TWRP 2.6.0.0 using fastboot everything works fine.
But now I want to install the zip to root the tablet, problem is TWRP cannot mount any storage, internal sdcard external sdcard nothing at all is alway says E:Can't mount 'xxx' on anything I tap.
I tried CWM, and 2.5.0.0 and nothing seems to work.
I can boot fine in the stock OS, everything works fine but that
My bootloader is 10.6.1.27.1-20130711
Can anyone help me?

Ok now it is bad, I tried to factory reset using the bootloader (power + volume down)
It booted in the buged TWRP and now it keeps booting in TWRP and I cannot even reach the bootloader

Try using adb commands to boot into bootloader.
ADB reboot-bootloader is the command that I think you must use. Of course, use adb devices to see if your tab is listed.
______________________________
HTC Evo 4G LTE

aarsyl said:
Try using adb commands to boot into bootloader.
ADB reboot-bootloader is the command that I think you must use. Of course, use adb devices to see if your tab is listed.
______________________________
HTC Evo 4G LTE
Click to expand...
Click to collapse
I cannot get this to work on Windows 8, I have Asus Transformer ADB interface lister in device manager but I cannot see my device with the adb devices command.
Also, in TWRP when I try adb sideload it says failed.

win 8 is the worst OS you want to use when it comes to fastboot/adb (even with secpol.msc full admin access)
get your hands on a win7 / vista /xp
oh and TWRP2.6 is kinda bugged - flash 2.5 or lower
check this http://forum.xda-developers.com/showpost.php?p=44244313&postcount=12 but skip the steps you dont need (system, data userdata etc.)
cheers & gl
-Buster

Buster99 said:
win 8 is the worst OS you want to use when it comes to fastboot/adb (even with secpol.msc full admin access)
get your hands on a win7 / vista /xp
oh and TWRP2.6 is kinda bugged - flash 2.5 or lower
check this http://forum.xda-developers.com/showpost.php?p=44244313&postcount=12 but skip the steps you dont need (system, data userdata etc.)
cheers & gl
-Buster
Click to expand...
Click to collapse
I'm now on my laptop with Win7,
Ok so I tried to reset my device with a needle, but I cannot get it to the bootloader.
Still stuck in TWRP, I tried to go with ADB, I installer google usb driver from Android SDK, I cannot get it to be recognized by ADB, in the device manager I only see Transformer with a yellow "!", I tried with the Asus usb driver, nothing either.
Is there something else I can do to get this recognized with ADB? (fastboot doesn't work either)
I tried unpluging all, uninstalling all and reinstalling like 3 times.
Thanks for your help

Matiosse said:
I'm now on my laptop with Win7,
Ok so I tried to reset my device with a needle, but I cannot get it to the bootloader.
Still stuck in TWRP, I tried to go with ADB, I installer google usb driver from Android SDK, I cannot get it to be recognized by ADB, in the device manager I only see Transformer with a yellow "!", I tried with the Asus usb driver, nothing either.
Is there something else I can do to get this recognized with ADB? (fastboot doesn't work either)
I tried unpluging all, uninstalling all and reinstalling like 3 times.
Thanks for your help
Click to expand...
Click to collapse
fastboot should work. hold Vol-down and reset the device and keep vol-down pressed. it should go to fastboot. when you're in fastboot connect it to your laptop and see if the OS recognized your device - if not you have a driver issue. resolve that by installing the asus driver or the newest google generic drivers.
when you can see your device on dosprompt/powershel with fastboot devices then continue with getting recovery to work.
btw- stuck in twrp means? booting twrp (teamwin screen) but not responding?
good luck
-Buster

The problem is I cannot even get into fastboot, it keeps booting into TWRP, I tried to reset the tab with a needle, but I cannot reach fastboot in any ways

Matiosse said:
The problem is I cannot even get into fastboot, it keeps booting into TWRP, I tried to reset the tab with a needle, but I cannot reach fastboot in any ways
Click to expand...
Click to collapse
but you are still able to boot into android?

I was until I tried a factory reset, it wasn't working in Android so I did it in the fastboot menu.

Matiosse said:
I was until I tried a factory reset, it wasn't working in Android so I did it in the fastboot menu.
Click to expand...
Click to collapse
can you boot into twrp? and i mean just boot into it? so that you see install, backup, restore etc. buttons?
if yes - twrp has an adb mode
connect your tab in twrp to your pc (check that you can see it - adb devices) if yes type: adb reboot bootloader
and you should boot into that. test it with fastboot devices.
most important thing is that you get into fastboot or a working recovery to flash or prepare to flash a (custom) rom back onto your device.
Buster

I can get in TWRP on 2.5.0.0
But when I try ADB sideload it fails
The message is ADB sideload complete - Failed in red + lots of errors like Unable to mount '/data' '/cache' /system' pratically everything (note that I had the same problem of mounting when I was able to boot into Android)

Matiosse said:
I can get in TWRP on 2.5.0.0
But when I try ADB sideload it fails
The message is ADB sideload complete - Failed in red + lots of errors like Unable to mount '/data' '/cache' /system' pratically everything (note that I had the same problem of mounting when I was able to boot into Android)
Click to expand...
Click to collapse
learn to crawl before you run :angel:

Well I rooted 4 different android device and not a single one of them wasn't able to mount anything in recovery mod. I knew exactly what I was doing until I got in the recovery mod who won't even recognize my internal storage meanwhile I was able to perfectly boot in Android

Matiosse said:
Well I rooted 4 different android device and not a single one of them wasn't able to mount anything in recovery mod. I knew exactly what I was doing until I got in the recovery mod who won't even recognize my internal storage meanwhile I was able to perfectly boot in Android
Click to expand...
Click to collapse
dude - you can't boot into android anymore, you can't boot into fastboot to your own accord - yet you try to sideload stuff in twrp for what ever reason.
i gave you more hints and tips in my previous posts and link to get it to work yet it eems you did none.
so don't get me wrong - but what excactly is your goal here?

My goal is to get it working again...
I don't know if you've been reading my post but I did try everything you told me without sucess.
None of the tips I tried got me adb or fastboot working the sideload mode of TWRP doesn't work.

Matiosse said:
My goal is to get it working again...
I don't know if you've been reading my post but I did try everything you told me without sucess.
None of the tips I tried got me adb or fastboot working the sideload mode of TWRP doesn't work.
Click to expand...
Click to collapse
yes i read your posts - but im still unclear what you are trying to accomplish with sideload?
ok from the start:
when in twrp - connect your tab to your laptop - is windows working with it (drivers ok?) "adb devices" shows the device? if yes - adb reboot-bootloader (or fastboot reboot bootloader, not quite sure atm since i'm at work without micro usb cable) when issued the command is the tab rebooting? - and if yes, is it rebooting into twrp or fastboot? what screen is shown after that?
-B

ok from the start:
when in twrp - connect your tab to your laptop - is windows working with it (drivers ok?)
Windows isn't working with it, I tried Google usb driver, asus usb driver, universal adb driver, none of them work, this is where i'm stuck
"adb devices" shows the device? if yes - adb reboot-bootloader (or fastboot reboot bootloader, not quite sure atm since i'm at work without micro usb cable) when issued the command is the tab rebooting? - and if yes, is it rebooting into twrp or fastboot? what screen is shown after that?

Matiosse said:
ok from the start:
when in twrp - connect your tab to your laptop - is windows working with it (drivers ok?)
Windows isn't working with it, I tried Google usb driver, asus usb driver, universal adb driver, none of them work, this is where i'm stuck
"adb devices" shows the device? if yes - adb reboot-bootloader (or fastboot reboot bootloader, not quite sure atm since i'm at work without micro usb cable) when issued the command is the tab rebooting? - and if yes, is it rebooting into twrp or fastboot? what screen is shown after that?
Click to expand...
Click to collapse
when its connected - is device manager at least showing it as faulty or not at all? (yellow triangle exclamation mark thingy, i just installed asus on my VM) -> see attached file

UPDATE: I succeeded to go in fastboot mode
I couldn't get my tab to be recognized by windows so I installer my Nexus 4 using the toolkit, when it was succesfully installed I could manually install my tab since the "android devices" option appeared in the list when you want to manually install a driver in the devices manager. So I could choose Asus ADB interface.
Now I can boot into Android, but it will go into TWRP as soon as I restart my tablet.
Now I will try the link you sent me to get TWRP recognize my storage so I can flash a new rom, I will let you know if something go wrong.
Thanks for helping

[Q] Help - Rooting gone wrong

So I got the HTC One s and try to root it with the following instruction: http://forum.xda-developers.com/showthread.php?t=1583427&__utma=248941774.997411949.1390324490.1394471756.1396118873.6&__utmb=248941774.2.10.1396118873&__utmc=248941774&__utmx=-&__utmz=248941774.1394471756.5.2.utmcsr=feedburner|utmccn=Feed:%20xda-developers/ShsH%20(xda-developers)|utmcmd=feed&__utmv=-&__utmk=25799614
As I thought that Step 3 was only there to install the Superuser.apk i just skipped it (mistake no. 1) and wiped the whole thing (without making a backup --> mistake no. 2) and tried to install the Maximus HD Rom which as I am still S-On of course didnt work. So I wiped again but really careless and made mistake no. 3: wiping the whole thing instead of just a few partitions like system, cache,....
So now I have my device S-On, theres really nothing on it exept TWRP but there (and in other recoverys I tried) the USB mout doesnt work so I cant get a new rom on it So I tried to push it through fastboot but I cant find a fitting command.
Any advice what I can do to either get the USB work in the recoverys or push it through fastboot and which rom works without S-Off?
If you need further infos Id like to give those!

Akkordinator said:
So I got the HTC One s and try to root it with the following instruction: http://forum.xda-developers.com/showthread.php?t=1583427&__utma=248941774.997411949.1390324490.1394471756.1396118873.6&__utmb=248941774.2.10.1396118873&__utmc=248941774&__utmx=-&__utmz=248941774.1394471756.5.2.utmcsr=feedburner|utmccn=Feed:%20xda-developers/ShsH%20(xda-developers)|utmcmd=feed&__utmv=-&__utmk=25799614
As I thought that Step 3 was only there to install the Superuser.apk i just skipped it (mistake no. 1) and wiped the whole thing (without making a backup --> mistake no. 2) and tried to install the Maximus HD Rom which as I am still S-On of course didnt work. So I wiped again but really careless and made mistake no. 3: wiping the whole thing instead of just a few partitions like system, cache,....
So now I have my device S-On, theres really nothing on it exept TWRP but there (and in other recoverys I tried) the USB mout doesnt work so I cant get a new rom on it So I tried to push it through fastboot but I cant find a fitting command.
Any advice what I can do to either get the USB work in the recoverys or push it through fastboot and which rom works without S-Off?
If you need further infos Id like to give those!
Click to expand...
Click to collapse
TWRP has ADB Sideload feature. Means you can flash zips using adb. Of course you can flash a roms this but keep in mind you have to flash the kernel (boot.img) manually immediately after flashing the rom.zip. When flashed Rom.zip by using ADB sideload method make SURE that you direct go into fastboot mode and flash the kernel (fastboot flash boot boot.img) (you can extract the boot.img from your rom.zip)
May be a compatible rom this time? But you're lucky -> Infact you already deleted everything you won't have to perform a wipe before flashing lol

LS.xD said:
Of course you can flash a roms
Click to expand...
Click to collapse
Ok, but I dont know with which command (fastboot flash what? or adb?)

You can use adb sideload as followed:
Start TWRP -> advanced -> ADB sideload + swipe to activate it. Connect your phone to the computer. Open "CMD Commandline" and type "adb sideload ROMNAME.zip"
Of course "ROMNAME" has to match the zip you want to flash. Thats it
In twrp go to "REBOOT" -> "fastboot"
When fastboot usb is ready use CMD commandline again and type "fastboot flash boot boot.img"
Then you can boot android

I whished I could. As I start ADB sideload it keeps doing nothing at all until I abort it. What I think is important to know is that it is then:
"E:Unable to mout '/internal_sd'
E:Unable to mount storage.", which I think is the problem.

Flash Stock recovery And perform "factory Reset + clear storage" that will fix your storage. Then flash twrp Version 2.7 again and do what I suggested to flash the Rom
Sent from my beloved HTC One S using (most time buggy) Tapatalk

Did the exact thing which removes the mounting error, but this has no effect on the sideload (or usb mount). Still not working.

Akkordinator said:
Did the exact thing which removes the mounting error, but this has no effect on the sideload (or usb mount). Still not working.
Click to expand...
Click to collapse
Can you acces your sdcard by twrp? Lot of poeple here has sd card bug yet and it was fixed everytime.
You're facing sdcard bug.
This is how to solve:
1. Flash stock recovery
2. reboot to bootloader and perform "factory reset + clear storage" (While in bootloader NOT in recovery)
3. Flash custom recovery again
4. Reboot recovery - mount usb storage - copy ROM.zip to sdcard // adb sideload rom
7. NOW boot android (Not at any time before! Even there is no system installed)
Please just repeat it.

LS.xD said:
Can you acces your sdcard by twrp? Lot of poeple here has sd card bug yet and it was fixed everytime.
Click to expand...
Click to collapse
I can acces it in TWRP (of course only a TWRP folder in it). Tried the repeating progress over and over but nothing changes. And USB-OTG isnt able to mount.
Thanks for your patient help!

Akkordinator said:
I can acces it in TWRP (of course only a TWRP folder in it). Tried the repeating progress over and over but nothing changes. And USB-OTG isnt able to mount.
Thanks for your patient help!
Click to expand...
Click to collapse
In case you can acces the storage in twrp its related to windows or drivers. What windows version you are running?

LS.xD said:
In case you can acces the storage in twrp its related to windows or drivers. What windows version you are running?
Click to expand...
Click to collapse
It was windows! Tried it on the other computer with win7 instead of 8.1 and I finally got a connection!
Thanks so much!!!

[Q] halfbrick? adb doesn't work but Fastboot does

Hi guys,
I wiped everything by mistake in TWRP 2.8.4.0 and now I'm puzzled... I did a FULL (yeah....) wipe before flashing a custom ROM, but then, everything was gone, of course.
I still have access to TWRP ; the bootloader is unlocked ; was on JB 4.2 .
So I tried to put a Rom back into the memory of the Tab, but :
1/ TWRP won't mount my SD card with a ROM on it... Does anyone have an idea why?
2/ adb doesn't recognize the device... but "fastboot devices" does! So I have access to all the fastboot commands.. Sadly, it doesn't flash any .zip.
So I'm guessing I have to solve the SD card problem OR flash a system.img with flashboot...?
I don't know what to do. I read that an older version of TWRP might mount my SDcard, but I'm quite scared to try and flash another recovery, since I'm not sure it will not definitely brick the thing.
Thanks for any answer

dandystrion said:
Hi guys,
I wiped everything by mistake in TWRP 2.8.4.0 and now I'm puzzled... I did a FULL (yeah....) wipe before flashing a custom ROM, but then, everything was gone, of course.
I still have access to TWRP ; the bootloader is unlocked ; was on JB 4.2 .
So I tried to put a Rom back into the memory of the Tab, but :
1/ TWRP won't mount my SD card with a ROM on it... Does anyone have an idea why?
2/ adb doesn't recognize the device... but "fastboot devices" does! So I have access to all the fastboot commands.. Sadly, it doesn't flash any .zip.
So I'm guessing I have to solve the SD card problem OR flash a system.img with flashboot...?
I don't know what to do. I read that an older version of TWRP might mount my SDcard, but I'm quite scared to try and flash another recovery, since I'm not sure it will not definitely brick the thing.
Thanks for any answer
Click to expand...
Click to collapse
Use MTP to get said file onto the tablet ??
Or install the drivers to enable adb ??
Thx Josh

lj50036 said:
Use MTP to get said file onto the tablet ??
Or install the drivers to enable adb ??
Thx Josh
Click to expand...
Click to collapse
Thanks for the reply
But the drivers are already installed, that's why I don't get why adb doesn't work.
as for the MTP, I can't get to it, since there is no ROM installed on the tab anymore : when I switch it on, it stays stuck on the ASUS logo, but is not detected by the computer.
Do you know where I could get an image of a stock firmware to flash with fastboot? or another way to push a file?

dandystrion said:
Thanks for the reply
But the drivers are already installed, that's why I don't get why adb doesn't work.
as for the MTP, I can't get to it, since there is no ROM installed on the tab anymore : when I switch it on, it stays stuck on the ASUS logo, but is not detected by the computer.
Do you know where I could get an image of a stock firmware to flash with fastboot? or another way to push a file?
Click to expand...
Click to collapse
MTP from with in TWRP has nothing to do with the ROM ?
Thx Josh

lj50036 said:
MTP from with in TWRP has nothing to do with the ROM ?
Thx Josh
Click to expand...
Click to collapse
Oh, ok sorry, I didn't understand.
Then what is the MTP on TWRP? Is it in " Advanced"/"File Manager"? Cause then I don't know how to use it...

dandystrion said:
Oh, ok sorry, I didn't understand.
Then what is the MTP on TWRP? Is it in " Advanced"/"File Manager"? Cause then I don't know how to use it...
Click to expand...
Click to collapse
Nope you should be able to plug it into a PC and move files to it drag and drop the zip ....
But you should still have adb working, it is a must have when messing with android ...
If you would like to look into this more drop me a hangouts at [email protected]
Thx Josh

Hi dandystrion,
Sorry i cant give an answer, but MTP should be activated per default at twrp and you should have your device as a drive on PC.
I'm intessted on how did you flash twrp on an unlocked bootloader? I fighting with my tf700 since October to unlock my bootloader to install CyanogenMod. I did a lots of tickets and RMA, which didn't helps.
Can you give me a link or a short explanation how I can flash twrp?
Thanks

schlombie said:
Hi dandystrion,
Sorry i cant give an answer, but MTP should be activated per default at twrp and you should have your device as a drive on PC.
I'm intessted on how did you flash twrp on an unlocked bootloader? I fighting with my tf700 since October to unlock my bootloader to install CyanogenMod. I did a lots of tickets and RMA, which didn't helps.
Can you give me a link or a short explanation how I can flash twrp?
Thanks
Click to expand...
Click to collapse
I unlocked the bootloader with the Transformer Toolkit v3.2.0 (I can't post a link since I'm a new member, but google it up, you'll find easily) and flashed TWRP 2.8.4 with fastboot without any problem. Hope it will work out for you.

lj50036 said:
Nope you should be able to plug it into a PC and move files to it drag and drop the zip ....
But you should still have adb working, it is a must have when messing with android ...
If you would like to look into this more drop me a hangouts at [email protected]
Thx Josh
Click to expand...
Click to collapse
Thanks man.
Well the PC does not see the tablet. I'm quite sure of my drivers since adb worked fine until I messed up (the drivers were installed through the latest version of Asus Pad Pc Suite)... I tried a adb sideload too : no connection.
I'll be glad to get some help.

Tried a thrid, empty brand new sdcard, and it did the trick.
Still don't know why adb wouldn't work, but now it's fine, so... :fingers-crossed:
Thanks for the help

I have checked it. But it is based on the Asus Unlock Tool, which doesn't work for me in the past!
Thanks

Can I still install any recovery(CWM or TWRP) after I have forgotten my password?

My question is: Is there any way that i can install any custom recovery now, when I am locked out of my phone, so I can try Method 7 from this post . I have enabled USB debugging, but for some reason, my device is unauthorized from executing adb commands.
I have Xiaomi Redmi Note 3, and have forgotten its password. I have tried Method 2, 5 and 6 from this post, but to no avail.
I tried method 2 and 5 which requires ADB to be installed, but I was not able to access my phone. I have USB debugging enabled and my phone is not rooted. When I tried to run the following code:
Code:
adb devices
adb shell
it showed that my phone is unauthorized and error: device unauthorized This adb server's $ADB_VENDOR_KEYS is not set
Here's the screenshot:
When trying method 6, I had to change the path of ADB driver because the file I downloaded from the post, had its own ADB driver which clashed with my already installed ADB driver, but even after that, it again showed the above error. Here' the screenshot:
Finally I want to try method 7 from the above post, which requires custom recovery to be installed on the phone, is there any way now?
Though it seems now that the I have only one option left and that is to factory reset my phone, but if , there is any other way by which I can bypass my lock screen, please please please inform me.

Of course you can. Just boot your phone into fastboot and do "fastboot flash recovery <recovery image name>.IMG" and you'll flash it. And you can't access the adb because your screen is locked... This is how companies prevent phone hacking
So flash custom recovery, backup the /data , factory reset and after resetting restore the /data backup. And you're good to go. I suggest you using TWRP, because I use it and it never left me hanging Keep me updated.
Sent from Lenovo a6000 1GB version.

Install TWRP or CWM with fastboot and then flash the Unlock me! zip that I've created and you won't lose your data.
Sent by my iPad using Tapatalk

joe2k01 said:
Install TWRP or CWM with fastboot and then flash the Unlock me! zip that I've created and you won't lose your data.
Sent by my iPad using Tapatalk
Click to expand...
Click to collapse
Didn't know that such package existed... I'd still do it my way if your phone was laggy/corrupted,... Else do the package flash. Keep me updated!
Sent from Lenovo a6000 1GB version.

Thanks! a lot, could you please guide me a little bit, how should I proceed?
MGlolenstine said:
Of course you can. Just boot your phone into fastboot and do "fastboot flash recovery <recovery image name>.IMG" and you'll flash it. And you can't access the adb because your screen is locked... This is how companies prevent phone hacking
So flash custom recovery, backup the /data , factory reset and after resetting restore the /data backup. And you're good to go. I suggest you using TWRP, because I use it and it never left me hanging Keep me updated.
Sent from Lenovo a6000 1GB version.
Click to expand...
Click to collapse
Thanks! a lot for reply, As I am still a newbie and trying to learn few things. Could you please guide me how should I proceed?
Like What files I need to download and from where? Also how should I use these files to install recovery?

dost25 said:
Thanks! a lot for reply, As I am still a newbie and trying to learn few things. Could you please guide me how should I proceed?
Like What files I need to download and from where? Also how should I use these files to install recovery?
Click to expand...
Click to collapse
OK... So first boot into fastboot. When you've done that, connect It to your pc with usb, download fastboot package from somewhere on xda(you'll find it).
Open command prompt "CD" to the directory where your fastboot is located in, put recovery image in the folder where fastboot.exe is and type "fastboot flash recovery <recovery file name>.IMG". I'm gonna update this answer in 2 days, when I get to my pc, so try to do it by these instructions, if something isn't working, comment and we'll resolve the problem. If something isn't clear, just ask. Keep me updated.
Sent from Lenovo a6000 1GB version.

Ok i will try
MGlolenstine said:
OK... So first boot into fastboot. When you've done that, connect It to your pc with usb, download fastboot package from somewhere on xda(you'll find it).
Open command prompt "CD" to the directory where your fastboot is located in, put recovery image in the folder where fastboot.exe is and type "fastboot flash recovery <recovery file name>.IMG". I'm gonna update this answer in 2 days, when I get to my pc, so try to do it by these instructions, if something isn't working, comment and we'll resolve the problem. If something isn't clear, just ask. Keep me updated.
Sent from Lenovo a6000 1GB version.
Click to expand...
Click to collapse
Can unlocking my bootloader somehow brick my phone?

Everything can brick your phone. Updating my lenovo phone with official update hardbricked mine... But yeah, it can.