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[Recovery] Twrp v3 for Lg Aristo [metropc/t-mobile]

So, I earlier this morning I was finally able to fix my Aristo. I had to use LGUP tool to flash the stock firmware on my phone. I made another mistake when reinstalling TWRP by not formatting the data in the "Wipe" area if TWRP. That put me back into the "Encryption Unsuccessful" error screen. However, this time even reflashing the stock firmware didn't fix that error screen. What did was reflash the TWRP image file, format both the userdata and cache with fastboot commands. With that, I'm back in TWRP and I followed your steps to the letter this time and now have a fully functional, rooted and TWRP'ed LG Aristo.:D

In a weird way, I'm kind of glad this happened. I feel like I've learned quite a bit about fastboot, fixing errors like this and increased my google-fu skills.:D
I successfully rooted and had no problems for a few days then it died and it was stuck in a black screen loop everytime after boot.
Im hoping to flash the original kdz file. Where did you get the kdz file from? I made a mistake of not creating one
 
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So I ended up giving this a shot today, but I'm not getting very far. I unlocked my bootloader and flashed TWRP from fastboot, but when I try to boot into it for the first time I get a screen saying my software can't be checked for corruption and it tells me to push the power button and then boots into initial setup. Anyone run into this problem or know how to fix it?
thats normal all you have to do now is just pull the battery and put it back in. Then just hold the volume down + power, release power as soon as lg logo comes up and hold power again while still pressing down the volume down and a screen will come up saying erase all ...
use volume down key to go down, then click yes, then click yes again and then press the power button and twrp will load up aka recovery mode.
Go to wipe>format data.
press back and reboot back into twrp.
or just stay there and click install and download the supersu.zip and the no-verity.zip and transfer it to your phone.
And flash them.
and profit.
 
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phone is not being recognized by pc in the lg flash tool. or lgup. It can be picked it in bootloader but soon as i boot it into download/update mode....Its counted as a unknown device in device manager. What driver are you using for it man? Btw, I have no data, system or anything. I erased everything in phone trying to get it unbricked.
 
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Getting that screen means the bootloader is unlocked. Don't worry it's normal. Which step have you gotten to in Messi's guide?

thats normal all you have to do now is just pull the battery and put it back in. Then just hold the volume down + power, release power as soon as lg logo comes up and hold power again while still pressing down the volume down and a screen will come up saying erase all ...
use volume down key to go down, then click yes, then click yes again and then press the power button and twrp will load up aka recovery mode.
Go to wipe>format data.
press back and reboot back into twrp.
or just stay there and click install and download the supersu.zip and the no-verity.zip and transfer it to your phone.
And flash them.
and profit.

What's happening is, after I flash TWRP and take my battery out and do the volume down + power sequence, I get to the white screen saying erase all data, which I hit Yes on twice, but then it immediately takes me to the black "Your software can't be checked for corruption" screen instead of booting into TWRP like it should. I'm not getting any error messages in adb when I flash TWRP either. It's almost like it says it flashes it but it actually doesn't.
 
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phone is not being recognized by pc in the lg flash tool. or lgup. It can be picked it in bootloader but soon as i boot it into download/update mode....Its counted as a unknown device in device manager. What driver are you using for it man? Btw, I have no data, system or anything. I erased everything in phone trying to get it unbricked.

Hmm, see if the LG drivers here work: https://forum.xda-developers.com/lg-g5/development/uppercut-lgup-loader-g5-variants-t3511295 .
 
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What's happening is, after I flash TWRP and take my battery out and do the volume down + power sequence, I get to the white screen saying erase all data, which I hit Yes on twice, but then it immediately takes me to the black "Your software can't be checked for corruption" screen instead of booting into TWRP like it should. I'm not getting any error messages in adb when I flash TWRP either. It's almost like it says it flashes it but it actually doesn't.

Just to make sure the message says"Your device software can't be checked for corruption. Please lock the bootloader", correct? If it does, then simply press the power button and continue the root process.
 
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Yup, that's the screen. When I hit power at that screen after flashing recovery.img and doing the volume down + power dance the phone just boots normally instead of going into TWRP, so I can't continue the root process because I can't get into TWRP. I just tried the "adb reboot recovery" command in adb as well but that just brings me to the "cannot be checked for corruption" screen, then the LG boot screen, then a black screen that says "No command" with one of those little droid guys on his back looking like he's being worked on. No idea what I'm doing wrong but on the bright side the phone is working fine otherwise.
 
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Yup, that's the screen. When I hit power at that screen after flashing recovery.img and doing the volume down + power dance the phone just boots normally instead of going into TWRP, so I can't continue the root process because I can't get into TWRP. I just tried the "adb reboot recovery" command in adb as well but that just brings me to the "cannot be checked for corruption" screen, then the LG boot screen, then a black screen that says "No command" with one of those little droid guys on his back looking like he's being worked on. No idea what I'm doing wrong but on the bright side the phone is working fine otherwise.

That "NO command" screen means the TWRP image didn't stick. Reflash the TWRP recovery image through fastboot and follow the steps in thread's guide carefully. It should work after that.
 
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That "NO command" screen means the TWRP image didn't stick. Reflash the TWRP recovery image through fastboot and follow the steps in thread's guide carefully. It should work after that.

Did that a few times already but just for shits and giggles decided to do it once more and it worked this time. Everything else went perfectly smooth. Thanks for the help!
 
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Awesome! You're welcome. I'm glad it worked for ya!:)

So my phone is a "unknown device" now. I guess cause I erased everything on it.
came up on lgup but as a unknown device...
No matter what drivers I had, It was still unknown.
However I can still use fastboot mode.
I relocked the bootloader to see what would happen. But now it just says "Your device is corrupt. It cannot be trusted and it will not boot" xD
Any ideas?
think I can just flash the stock recovery img and trying updating it after that?
 
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Awesome! You're welcome. I'm glad it worked for ya!:)
Do you got the stock.img or boot.img?



EDIT: I extracted the kdz and got the system.img, boot.img and recovery.img.
But it didnt help, The phone just boots and stays stuck at lg screen.
Tried flashing twrp again and booted into twrp and all I seen was "failed mount /data, failed mount /system(unknown error 150)".
Trying to flash kdz, lgup wont recognize it though. Guessing cause it got no os.
Gonna try and use a debugger to make it work with "unknown device".
or to bypass it somehow. If it picks it up, even if its a unknown device, theres hope.
 
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Do you got the stock.img or boot.img?



EDIT: I extracted the kdz and got the system.img, boot.img and recovery.img.
But it didnt help, The phone just boots and stays stuck at lg screen.
Tried flashing twrp again and booted into twrp and all I seen was "failed mount /data, failed mount /system(unknown error 150)".
Trying to flash kdz, lgup wont recognize it though. Guessing cause it got no os.
Gonna try and use a debugger to make it work with "unknown device".
or to bypass it somehow. If it picks it up, even if its a unknown device, theres hope.

Even with everything wiped, download mode should be recognized and allow a kdz flash. Download mode is a function of the laf partition which would be unaffected by the wiping that's been done. I'd think the newest version of the LG Mobile driver would work for download mode recognition but if you are at the point of using a debugger something tells me, you'd have already tried all the drivers. The LG support page didn't seem to list a driver package but I'm mobile and may have missed it.

When you extracted the kdz, did you merge all the system img's?
 
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Even with everything wiped, download mode should be recognized and allow a kdz flash. Download mode is a function of the laf partition which would be unaffected by the wiping that's been done. I'd think the newest version of the LG Mobile driver would work for download mode recognition but if you are at the point of using a debugger something tells me, you'd have already tried all the drivers. The LG support page didn't seem to list a driver package but I'm mobile and may have missed it.

When you extracted the kdz, did you merge all the system img's?
Yeah, i merged all system bin files. In merge output the system img was there but i was around 3.7gb.
Tried flashing it with fastboot command and it said targeted max download size 2gb. So it kept failing.
I think I erased everything in the phone. I used fastboot erase cache, fastboot erase system, fastboot erase userdata, fastboot erase recovery and fastboot erase boot cause the photo would boot and go to flashing gray screen. Finally got rid of the gray screen flashing. But now its stuck on the lg logo after it boots.
Never thought about flashing kdz until now.
Im still working on it.
 
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Even with everything wiped, download mode should be recognized and allow a kdz flash. Download mode is a function of the laf partition which would be unaffected by the wiping that's been done. I'd think the newest version of the LG Mobile driver would work for download mode recognition but if you are at the point of using a debugger something tells me, you'd have already tried all the drivers. The LG support page didn't seem to list a driver package but I'm mobile and may have missed it.

When you extracted the kdz, did you merge all the system img's?
I havent tried the debugger yet, been working all day.
But I will try it; if spliting the system.img in half and flashing both of them doesn't work.
 
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I havent tried the debugger yet, been working all day.
But I will try it; if spliting the system.img in half and flashing both of them doesn't work.

If you can get a root shell right when twrp boots, you could use a dd write command. It will power through large files such as the system.img where fastboot fails on that large of a file. The kdz would be a good method also. Just start over afterward. Its the cleanest way to go.
 
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If you can get a root shell right when twrp boots, you could use a dd write command. It will power through large files such as the system.img where fastboot fails on that large of a file. The kdz would be a good method also. Just start over afterward. Its the cleanest way to go.

I dont got twrp on it.
Everytime I flash it and boot into twrp...
I see the twrp splash screen for a second and see "failed mount /system, /data/, etc."
All reds and alot of "unknown error 150"
Then it reboots automatically.
I've tried the lg flash tool 2014, the lg flash tool 2016, and the lgup 1.14 and uppercut.
It never picks up my device. I have the right drivers installed...
But it just says "unknown" in model.
weird thing is, it was in fastboot mode trying to flash the stock.img, factory.img and boot.img and lgup poped up and it showed up in the flash tool and I attempted to flash it and half way through, it disconnected.
So I know It shows up...
But not in download mode.
If only there was a way to get passed the damn "targeted max download size 262982000 bytes" error in fastboot mode when I flash the system.img.
Maybe it will pick up in the flash tools.
For now, It just boots and stays stuck on lg screen.
 
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If you can get a root shell right when twrp boots, you could use a dd write command. It will power through large files such as the system.img where fastboot fails on that large of a file. The kdz would be a good method also. Just start over afterward. Its the cleanest way to go.

I tried the debugger but for some reason it breaks.
And I cant find the right call function for the device.
I was hoping to set it to zero so it'll be looking for a null.
And it'll work, but never got to that point.
It freezes in the debugger soon as you load a kdz.

IM thinking about just relocking it and sending it to t mobile for a replacement.
Dont even get me started on them.
If I ws to go through that process, being that I ordered it from online, It would take a month to get a new phone.
 
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Even with everything wiped, download mode should be recognized and allow a kdz flash. Download mode is a function of the laf partition which would be unaffected by the wiping that's been done. I'd think the newest version of the LG Mobile driver would work for download mode recognition but if you are at the point of using a debugger something tells me, you'd have already tried all the drivers. The LG support page didn't seem to list a driver package but I'm mobile and may have missed it.

When you extracted the kdz, did you merge all the system img's?
do you know of a way to force flash the system .img in fastboot mode?
Or to get rid of the targeted max download size error?
 
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