Hello guys,
I am an unlocked LG G4 user running on Android 5.1 Lollipop.
I cant recieve updates through OTA as it always says "You have latest version of current OS". So I tried updating manually.
Since I am not very good with LG flash tools I was looking at unlocking bootloader and twrp.
The problem is :
My hardware info shows "LG H815"
Adb recognizes it as "LGF500L204da3d4 unauthorized"
A google search told me that F500L is Korean variant and now I am totally confused. Am I missing something here.
I have attached screenshots of device info.
Please guide.
The unauthorized thing comes from enabling ADB in the Developer Options. Once you do that, the very next time you connect the G4 to a computer and then run the "adb devices" command it starts the adb daemon and then tries to connect to the device, upon a connection the phone not the computer will pop up a box asking for permission to allow the connection based on an RSA fingerprint (aka the security aspect) and you have to allow that.
Without allowing that you'll never get ADB to work properly. You can try this process to get things working properly:
- Disconnect the G4 from the computer entirely
- Disconnect it from any charger too just so you're good to go
- Go into the Developer Options, revoke all using the "Revoke USB debugging permissions" and reboot the G4 right then and right there as soon as those permissions are revoked, do NOT do anything else, reboot immediately after you make that change
- Upon the reboot let the G4 boot completely and wait 2 minutes before swiping/unlocking the device back to the Home screen
- Plug in the USB cable and make sure you choose the MTP/file option, not charging
- Fire up the adb devices command on the computer and watch the phone carefully for that popup asking for permission to connect
- Choose OK to enable the connection and check the box to make it permanent for that specific computer
After that it should show you the device serial number and say "authorized." If not then you're missing something or there's some other problem, but that's how I've done this on a few hundred devices over the years and never had an issue. The other thing that could be affecting this are making sure you have the proper ADB drivers, sometimes that can be a complete pooch-screw to get working and I can't help on that front.
Pic below is what you're looking for and without granting this permission ADB will never see the device as authorized.
Good luck...
br0adband said:
The unauthorized thing comes from enabling ADB in the Developer Options. Once you do that, the very next time you connect the G4 to a computer and then run the "adb devices" command it starts the adb daemon and then tries to connect to the device, upon a connection the phone not the computer will pop up a box asking for permission to allow the connection based on an RSA fingerprint (aka the security aspect) and you have to allow that.
Without allowing that you'll never get ADB to work properly. You can try this process to get things working properly:
- Disconnect the G4 from the computer entirely
- Disconnect it from any charger too just so you're good to go
- Go into the Developer Options, revoke all using the "Revoke USB debugging permissions" and reboot the G4 right then and right there as soon as those permissions are revoked, do NOT do anything else, reboot immediately after you make that change
- Upon the reboot let the G4 boot completely and wait 2 minutes before swiping/unlocking the device back to the Home screen
- Plug in the USB cable and make sure you choose the MTP/file option, not charging
- Fire up the adb devices command on the computer and watch the phone carefully for that popup asking for permission to connect
- Choose OK to enable the connection and check the box to make it permanent for that specific computer
After that it should show you the device serial number and say "authorized." If not then you're missing something or there's some other problem, but that's how I've done this on a few hundred devices over the years and never had an issue. The other thing that could be affecting this are making sure you have the proper ADB drivers, sometimes that can be a complete pooch-screw to get working and I can't help on that front.
Pic below is what you're looking for and without granting this permission ADB will never see the device as authorized.
Good luck...
Click to expand...
Click to collapse
Ok..So I tried as per above instructions.
The only change is it's written as "device" in place of "unauthorized". The serial number is the same.
I thought it would be written as LGH815...etc etc for the H815 model. But here it's F500L...
Is this normal?
[email protected] said:
Ok..So I tried as per above instructions.
The only change is it's written as "device" in place of "unauthorized". The serial number is the same.
I thought it would be written as LGH815...etc etc for the H815 model. But here it's F500L...
Is this normal?
Click to expand...
Click to collapse
Update:
Found something interesting as well.
The phone doesn't boot into recovery using hardware keys.
I tried with adb and got into a screen showing "No command" with red exclamation.
It means you don't have a working recovery partition now so something got borked. Best case scenario: do a full factory reinstall of the stock ROM and go from there, maybe, using Odin or whatever tool you prefer, these days I have no idea what software there is to be honest.
I don't own a G4 anymore either, but if I find one in good shape for a good price, like $50 or less, I'll more than likely grab it.
br0adband said:
It means you don't have a working recovery partition now so something got borked. Best case scenario: do a full factory reinstall of the stock ROM and go from there, maybe, using Odin or whatever tool you prefer, these days I have no idea what software there is to be honest.
I don't own a G4 anymore either, but if I find one in good shape for a good price, like $50 or less, I'll more than likely grab it.
Click to expand...
Click to collapse
Maybe I should just keep it as it is coz I don't even know what rom to use and actually which model it is.
[email protected] said:
Maybe I should just keep it as it is coz I don't even know what rom to use and actually which model it is.
Click to expand...
Click to collapse
Used to believe HTC devices are tough nuts to crack but LG just blowed me away.
Related
Hello again. I've posted this problem in another thread and didn't get very far so I'm re-rolling the issue and posing it another way. Ok, here goes:
Tablet is a generic Chinese tablet. Klu by Curtis model number LT7052. This is a password locked unit that the original owner could not fix and has since abandoned the unit. I'm attempting any method for working around this problem and have gone through all the normal procedures. USB debugging is off. I can access recovery mode, however no combination of button pushing will yield the actual menu, you just see Andy, lying on his back with a red triangle and exclamation point hovering above him (maybe some kind of added caution screen, maybe corrupted recovery?). When I attach it to the computer at this point, load the Android ADB drivers, and type in "adb devices" I get:
"0123456789ABCDEF recovery"
"abd shell" yields the "No such file or directory <2>" error. Not really surprising as USB debugging is off.
When I use the "reboot fastboot" command and then reinstall the appropriate drivers the device is not found. Again, locked, no debugging, not really a huge surprise. I've even tried the wipe command from fastboot and it just sits there waiting for the device, again not a huge surprise since it cant be found.
I was able to locate the original firmware on the manufacturer's website and downloaded it, but I'm not sure what options I have at this point. It's really just a fun project for me trying to figure this out, but having the tablet operational would be a plus. If anyone has any ideas on how to proceed at this point I'd be willing to try just about anything, no matter how "off the cuff" it may seem. Any way to force feed this tablet the original OS without shell access? Thoughts? Suggestions? Thanks a ton for reading.
Bump for another look. Thanks!!
Hi as a long time lurker around here i decided to go for an LG G4 after using an iphone for the last 10 years
So i purchased a new handset today and followed the guide and somehow cocked up
Its a h815eu and after i installed the bootloader it updated my firmware to v10c-EUR-XX
Now when i try to carry out the twrp of the guide i just get the message 'waiting for device'
Now before you say 'this is why idiots blah blah' this is the first android device i have ever owned/even looked at
I have cocked up somewhere and frankly need a bit of help
I am usually pretty savvy on most things of this nature so i am feeling a little sheepish having to resort to this thread
The handset is still functioning normally its just not having any of it on the root side of things
Suggestions?
oh forgot to add i have tried to install the twrp manager which tells me root is required for this app
when i enter the command 'apb fastboot reboot' it gives me several lines
also when i enter 'fastboot reboot' i get a message in the top left corner but i cant make it out it looks like 'fastboot uploaded' or something like that
Go into settings on your phone, general, about phone, click on software info. Next tap on build number until it says congratulations you are a developer. Next, back out of there, and look for developer options under settings/general. From here, click on that and then click on USB Debugging. If you unplug and re-plugin your phone as long as you have the proper drivers installed you should be able to do adb reboot-bootloader. From here you should be able to follow root methods elsewhere found on the forum.
drivel2787 said:
Go into settings on your phone, general, about phone, click on software info. Next tap on build number until it says congratulations you are a developer. Next, back out of there, and look for developer options under settings/general. From here, click on that and then click on USB Debugging. If you unplug and re-plugin your phone as long as you have the proper drivers installed you should be able to do adb reboot-bootloader. From here you should be able to follow root methods elsewhere found on the forum.
Click to expand...
Click to collapse
Hi yes i can do that but anything further i try to do gives me waiting for device message
Is it because i am on v10c firmware? Thats the problem with doing something new i was not sure if i cancelled the updates the root would be cancelled out once the updates were installed
C:\Program Files (x86)\Minimal ADB and Fastboot>adb devices
List of devices attached
LGH815cb3d0a5 device
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot reboot
< waiting for device >
gap30 said:
Hi yes i can do that but anything further i try to do gives me waiting for device message
Is it because i am on v10c firmware? Thats the problem with doing something new i was not sure if i cancelled the updates the root would be cancelled out once the updates were installed
Click to expand...
Click to collapse
Go back into developer settings and click the option to delete the... I forget the wording but it deletes the computer debug connection so that way when you plug in the computer will all permission again.
Sent from my VS980 4G
jesssiii said:
Go back into developer settings and click the option to delete the... I forget the wording but it deletes the computer debug connection so that way when you plug in the computer will all permission again.
Sent from my VS980 4G
Click to expand...
Click to collapse
Thing is if you delete the the debug option or cancel it you cannot do anything on the phone via the pc
I cannot post any pics till i have 10 posts and i dont want to spam
While the phone is connected. Try and change the USB connection to PTP from MTP.
Ok i have tried kdz and still no joy
it still show the bootloader in corner on start up
and if i enter any commands the phone hangs and i have to remove the battery and get 'waiting for device'
Not good this
gap30 said:
Thing is if you delete the the debug option or cancel it you cannot do anything on the phone via the pc
I cannot post any pics till i have 10 posts and i dont want to spam
Click to expand...
Click to collapse
I'm saying to revoke the previous permissions, not turn off debug. Your phone will then present a popup to connect again when plugged into computer.
LG G2 VZW
jesssiii said:
I'm saying to revoke the previous permissions, not turn off debug. Your phone will then present a popup to connect again when plugged into computer.
LG G2 VZW
Click to expand...
Click to collapse
Yeah just tried that - the problem i have is it hangs in the bootloader if i try any commands ie fastboot reboot
C:\Program Files (x86)\Minimal ADB and Fastboot>adb reboot bootloader
C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot boot TWRP2861.img
< waiting for device >
The first command always works which brings up several lines of text
Its anything after that and this causes the phone to hang and i have to physically remove the battery to get it going again
Hello, my Oneplus 3 finally met its maker when it slid off my knee as I was doing a poo. This phone had served me well for a long time and was used for the last year without a functioning power button.
Today I was trying to extract my data from the phone using adb. However, I have a few issues.
The screen is fully black and shattered and digitizer appears to also be broken.
I can use the fingerprint sensor, but not much else. If I try to apply pressure to the screen, the device disconnects from the computer then reconnects.
My phone will not show in 'My PC' and just shows as 'android' under 'USB devices' in Device Manager, I try to update the driver through this and I am just assigning it to be an 'ADB device' or 'Oneplus Android ADB Interface' which does not help.
I have downloaded the Oneplus USB drivers and installed them which did not help or allow me to select those as driver updates in 'device manager'. Even after turning off signed driver checks in boot options.
I believe I have USB debugging on, as I turned it on not long ago due to the power button failing. But when I attempt to use ADB I either get 'unauthorised' or 'offline' beside my devices serial number.
I have tried unlocking my device with my fingerprint and it has the response vibration but does not allow me to access it.
Ideally I would like it to work with '[email protected]' and 'android control' but I would settle for just being able to pull everything off the device. I have been reading threads and trying fixes all day to no avail. Please help me.
Desktop Info that may have an effect
Windows 10 version 1803
USB 3.0 ports
Related programs installed
ADB Minimal and Fastboot
Android Studio (not sure how to use)
[email protected]
Android Control
Thankyou
FinnSanity7 said:
Hello, my Oneplus 3 finally met its maker when it slid off my knee as I was doing a poo. This phone had served me well for a long time and was used for the last year without a functioning power button.
Today I was trying to extract my data from the phone using adb. However, I have a few issues.
The screen is fully black and shattered and digitizer appears to also be broken.
I can use the fingerprint sensor, but not much else. If I try to apply pressure to the screen, the device disconnects from the computer then reconnects.
My phone will not show in 'My PC' and just shows as 'android' under 'USB devices' in Device Manager, I try to update the driver through this and I am just assigning it to be an 'ADB device' or 'Oneplus Android ADB Interface' which does not help.
I have downloaded the Oneplus USB drivers and installed them which did not help or allow me to select those as driver updates in 'device manager'. Even after turning off signed driver checks in boot options.
I believe I have USB debugging on, as I turned it on not long ago due to the power button failing. But when I attempt to use ADB I either get 'unauthorised' or 'offline' beside my devices serial number.
I have tried unlocking my device with my fingerprint and it has the response vibration but does not allow me to access it.
Ideally I would like it to work with '[email protected]' and 'android control' but I would settle for just being able to pull everything off the device. I have been reading threads and trying fixes all day to no avail. Please help me.
Desktop Info that may have an effect
Windows 10 version 1803
USB 3.0 ports
Related programs installed
ADB Minimal and Fastboot
Android Studio (not sure how to use)
[email protected]
Android Control
Thankyou
Click to expand...
Click to collapse
If you had used adb before and the phone was recognised earlier, then there shouldn't be an issue. If not, then when issuing adb commands, there will be a popup on the phone asking you to enable authorisation and to make it permanent. In your current scenario, you will not be able to grant authorisation. Your drivers might be installed properly but because of this "authorisation" issue, the phone might not be recognised properly.
Search for methods to pull data from the phone. I had read about a couple of methods where you can mirror your screen on the PC which will solve the problem for you. Unfortunately I am not able to recollect where I read that.
EDIT: Enter fastboot mode on your phone and connect it to the PC. Then using 'fastboot boot twrp.img' you can boot into TWRP on the phone and access the files and copy them using adb commands. This requires the TWRP in the same folder as your adb tools or vice versa and renaming the file as TWRP. I don't know whether this also requires 'authorisation' but try it any way.
Having searched far and wide for a solution for my problem (and stumbling across the fact that it is great that the ZUK Z2 is really not brickable) I wonder if there is not one...?
I was simply attempting to flash the Lineage rom (coming from AEX) but kepy getting an Error 7 (if I remember correctly), which is apparently fairly common, but for which none of the proposed solutions was working for me.
It was suggested to carry out a FULL WIPE (so I did this, including internal storage).
I then installed an alternative recovery mode to TWRP (the current one), without actually removing TWRP...so possible conflict here...?
So:
There is currently no OS on phone
I can open my phone in fastboot mode
Impossible to open recovery mode (which is the real killer)
Impossible to get phone recognised as external drive (and hence modify what is on it) - I can get it recognised by the device manager but only as QL.... not my actual phone
Impossible to communicate with phone through adb (logic, since phone not recognised
Since I cannot communicate with the phone in any way OR get the phone into recovery mode, my hands are tied as I see it...I really don't know what can be done from here :crying:
If anyone has any idea of how my phone could be saved, your help would be VERY MUCH appreciated
Thank you in advance for any feedback at all.
Charlie
chazhammer said:
Having searched far and wide for a solution for my problem (and stumbling across the fact that it is great that the ZUK Z2 is really not brickable) I wonder if there is not one...?
I was simply attempting to flash the Lineage rom (coming from AEX) but kepy getting an Error 7 (if I remember correctly), which is apparently fairly common, but for which none of the proposed solutions was working for me.
It was suggested to carry out a FULL WIPE (so I did this, including internal storage).
I then installed an alternative recovery mode to TWRP (the current one), without actually removing TWRP...so possible conflict here...?
So:
There is currently no OS on phone
I can open my phone in fastboot mode
Impossible to open recovery mode (which is the real killer)
Impossible to get phone recognised as external drive (and hence modify what is on it) - I can get it recognised by the device manager but only as QL.... not my actual phone
Impossible to communicate with phone through adb (logic, since phone not recognised
Since I cannot communicate with the phone in any way OR get the phone into recovery mode, my hands are tied as I see it...I really don't know what can be done from here :crying:
If anyone has any idea of how my phone could be saved, your help would be VERY MUCH appreciated
Thank you in advance for any feedback at all.
Charlie
Click to expand...
Click to collapse
Which recovery comes when you choose recovery option when you choose recovery by pressing start when phone is powering on before zuk logo..
You can use cable method (by shorting cable and going to edl mode) and qpst to safety.
sanjay.2704 said:
Which recovery comes when you choose recovery option when you choose recovery by pressing start when phone is powering on before zuk logo..
You can use cable method (by shorting cable and going to edl mode) and qpst to safety.
Click to expand...
Click to collapse
Thank you very much for your suggestion, Sanjay, it is very much appreciated :good:
When I choose recovery, everything just "hangs" - black screen that doesn't go anywhere (that's why I thought that maybe there was some kind of conflict, where the phone didn't know how to chose between the two options perhaps (pure specuclation!)
I have tried the solution you suggest, but it didn't work for me.
I will re-attempt this an extra ten times or so (you never know) just in case, and let you know how things go.
This one:
(https://forum.xda-developers.com/lenovo-zuk-z2/how-to/reboot-to-edl9008-modetotally-bricked-t3720932)
OK, so still no luck...
I used a method to use some tinfoil in the usb to get the device recognised in the device manager - it appears as => Android Device >> ShenQi Composite ADB Interface
The phone is in fastboot mode at this stage.
However, in ADB still no recognition of the phone
When entering "adb devices" I get "List of devices attached" and then blank
If I try "fastboot oem edl" I get < waiting for device >
"Adb reboot edl" gives me => "error: device not found"d
So essentially it still comes down to the fact that my device is not detected...although strangely there are signs of life in device manager (although I don't know what ShenQi Composite ADB Interface refers to ???)
Alternatively I see that it is possible to actually buy an EDL cable from China or something (https://www.magnetforensics.com/blog/qualcomm-phone-edl-mode/)
This appears to be restricted to other devices, but similar issue:
https://www.xda-developers.com/exploit-qualcomm-edl-xiaomi-oneplus-nokia/
Other devices can also use what’s known as a “deep flash” cable, which is a special cable with certain pins shorted to tell the system to instead boot into EDL mode. Old Xiaomi devices can utilize this method, along with the Nokia 5 and Nokia 6. Other devices will also boot into EDL mode when they fail to verify the SBL.
Does anyone know if this would actually work with an EDL cable approach???
Any other ideas out there?
I'd be willing to give someone some money if they were able to work through this issue with me, if they think that there is a solution here..else the phone is just spare parts :-/
Thank you in advance,
Charlie
For a little added information, the other recovery was: TWRP Red Wolf
(https://zukfans.eu/community/thread...r-image-error-7-installing-a-custom-rom.8347/)
While flashing this with TWRP there was an option to flash to.... I don't remember the options and can no longer consult to check, BUT at 2am, about to give up, and not knowing exactly what to select, I selected about 3 options at this stage
I believe there were something like 5 options and I selected "boot" I think, plus..?
Very stupid of course and obviously I was too confident in not creating a problem that couldn't be solved!
I have been playing around with flashing ROMs etc for the last 10 years, over 3/4 different devices and despite having read all the warnings, since over this time I have never had any issues, I kind of considered it to be almost impossible to get into a situation where things are irretrievable...so my comuppance :-/
Again, if anyone has any ideas, I would greatly appreciate
chazhammer said:
OK, so still no luck...
I used a method to use some tinfoil in the usb to get the device recognised in the device manager - it appears as => Android Device >> ShenQi Composite ADB Interface
The phone is in fastboot mode at this stage.
However, in ADB still no recognition of the phone
When entering "adb devices" I get "List of devices attached" and then blank
If I try "fastboot oem edl" I get < waiting for device >
"Adb reboot edl" gives me => "error: device not found"d
So essentially it still comes down to the fact that my device is not detected...although strangely there are signs of life in device manager (although I don't know what ShenQi Composite ADB Interface refers to ???)
Alternatively I see that it is possible to actually buy an EDL cable from China or something (https://www.magnetforensics.com/blog/qualcomm-phone-edl-mode/)
This appears to be restricted to other devices, but similar issue:
https://www.xda-developers.com/exploit-qualcomm-edl-xiaomi-oneplus-nokia/
Other devices can also use what’s known as a “deep flash” cable, which is a special cable with certain pins shorted to tell the system to instead boot into EDL mode. Old Xiaomi devices can utilize this method, along with the Nokia 5 and Nokia 6. Other devices will also boot into EDL mode when they fail to verify the SBL.
Does anyone know if this would actually work with an EDL cable approach???
Any other ideas out there?
I'd be willing to give someone some money if they were able to work through this issue with me, if they think that there is a solution here..else the phone is just spare parts :-/
Thank you in advance,
Charlie
Click to expand...
Click to collapse
Edl cable approach would work for you.. Here is the thread guide for you..
https://forum.xda-developers.com/lenovo-zuk-z2/how-to/deep-flash-revive-zuk-z2-hard-brick-t3577146..
Also I would suggest to stick to official twrp as that's more stable as compared to redwolf..
Hit thanks if it helps.
Thank you again Sanjay.
I have ordered a new lead (to cut open and attempt this intervention)!
I will let you know how I get on.
OK, I have done the cable trick and PORTS shows up in the device manager as "Qualcomm HS-USB QDLoader 9008 (COM5)", which seems to correspond with what was needed.
What should I do next exactly ?
The phone no longer actually shows any signs of life - I hope this is normal
chazhammer said:
OK, I have done the cable trick and PORTS shows up in the device manager as "Qualcomm HS-USB QDLoader 9008 (COM5)", which seems to correspond with what was needed.
What should I do next exactly ?
The phone no longer actually shows any signs of life - I hope this is normal
Click to expand...
Click to collapse
You can go ahead with qfil now.. You should see same port in qfil as well.
Once qpst is completed phone should boot up..
After some issues with the Sahara error (needed to update to edl mode and press download immediately) I finally managed to flash back to stock ROM
Thank you for all of your help!!!
So my buddy gave me this Nexus S 4G, since I like to collect phones. Unfortunately, it appears to be stuck on 4.0 ICS. I tried to check for an update to 4.1 ICS, but for some reason, it reports that my phone is up to date??? Wtf. So I tried doing it manually, I can't flash this random OTA which may or may not (probably is) Jelly Bean in stock recovery, but it fails. I tried doing it even more manually using fastboot, but for some reason, I can't get the USB drivers to work. My next step is to use a Macintosh, as they seem to work better with Android, but I don't have access to it yet. In the mean time, is there any other way to get this phone updated or, at the very least, rooted and ROM'd?
@Dr. Hax
I'm assuming you are using windows? If so burn a Linux iso, Mint or Ubuntu are both great. You can make a bootable iso using a thumb drive or CD. Then set up your pc for dual boot. You'll never have a driver issue on Linux.
I'm sure you probably know this but how I have gotten windows to work and see my device is install the fastboot and adb 15 second installer from here: https://forum.xda-developers.com/showthread.php?t=2588979
Then reboot of course. And when I plug my device in have developer options enabled and usb debugging enabled and be watching phone for the little box pop up that you just checkmark really quick so your pc can communicate with the device... Also if you scroll down on the phone in developer options to "default usb configuration" and change that to "file transfer", that will usually bring the little box up on my devices to check mark so they can communicate..It only shows for a second then it's gone. But if it hasn't popped up yet then open terminal and type sudo adb devices (hit enter) and again be watching your phone because that little box should then come up that you must quickly check mark on phone so pc and phone can communicate.
I always uninstall and reinstall drivers on windows and reboot afterwards. Also make sure check device manager and see what's there. But that 15 second fastboot adb installer for windows is a life saver and makes it all super easy!! On Linux none of this happens. Ever! ? You just plug in your phone and the model of your device shows up on the computer screen. IDK if this makes sense much but I tried to word it where it did best I could. Hopefully this helps or you already got it going.