LG G4 H815 - Bootloader Unlocked - Can't install TWRP - G4 Q&A, Help & Troubleshooting

Hello everyone.
I have unlocked the bootloader in my Int. H815 model and I have tried to install the lastest TWRP. But I am stuck now.
1. If I reboot to recovery with they keys, I get what looks like stock LG reset screen (Blue with yes or no to reset)
2. If I reboot to recovery with ADB - I get the small Android robot with ! on it. Usually you hold power and volume up (ON Nexus anyways), but this does nothing.
Any help would be great.
//Edit
I can get TWRP going, if I do fastboot boot twrp.img - Can I flash custom rom from here?

flash twrp from booted recovery
use the flash function inside twrp (flash image)

copy phone memory recovery.img.
go to bootloader. try command
fastboot boot recovery.img
and flash recovery.img in twrp..

BySezerSimsek said:
copy phone memory recovery.img.
go to bootloader. try command
fastboot boot recovery.img
and flash recovery.img
Click to expand...
Click to collapse
can you help me for install recovery and root android 6 ?

p_a_r_s_a7 said:
can you help me for install recovery and root android 6 ?
Click to expand...
Click to collapse
your bootloader unlocked?

BySezerSimsek said:
your bootloader unlocked?
Click to expand...
Click to collapse
Thanks man i do it
Sent from my LG-H815 using Tapatalk

Related

[RECOVERY][CWM] ClockworkMod Recovery 6.0.5.1 for Ascend Mate 7 (MT7-L09)

HOW TO INSTALL CWM?
Unlock your bootloader else flashing via fastboot will be impossible
Upgrade your phone to the latest available stock rom (to get latest bootloader and baseband firmware)
Download ClockworkMod Recovery for your specific variant
Reboot into your bootloader (Variant 1: adb reboot bootloader, Variant 2: Power down, hold Vol- and Power buttons at same time)
Flash ClockworkMod Recovery via fastboot. (fastboot flash recovery cwm-mate7_YYYYMMDD.img)
Reboot (fastboot reboot)
WHERE TO GET CWM?
MT7-L09: cwm_mate7_20150410.img - 9.43 MB
HOW TO USE CWM?
- First variant: Power off phone, then hold Volume+ and Power Buttons at same time till Honor logo appears
- Second variant: adb reboot recovery
Demazda said:
HOW TO INSTALL CWM?
Unlock your bootloader else flashing via fastboot will be impossible
Upgrade your phone to the latest available stock rom (to get latest bootloader and baseband firmware)
Download ClockworkMod Recovery for your specific variant
Reboot into your bootloader (Variant 1: adb reboot bootloader, Variant 2: Power down, hold Vol- and Power buttons at same time)
Flash ClockworkMod Recovery via fastboot. (fastboot flash recovery cwm-mate7_YYYYMMDD.img)
Reboot (fastboot reboot)
WHERE TO GET CWM?
MT7-L09: cwm_mate7_20150410.img - 9.43 MB
HOW TO USE CWM?
- First variant: Power off phone, then hold Volume+ and Power Buttons at same time till Honor logo appears
- Second variant: adb reboot recovery
Click to expand...
Click to collapse
Disregard. Not putting recovery in the right folder. Little mistakes make me lol.
Edit again, this recovery doesn't work for me. I flash it but when trying to get in to it, it just bootloops once then boots up normal.
Do you have the L09 variant?
It works for me, that's strange.
Demazda said:
Do you have the L09 variant?
It works for me, that's strange.
Click to expand...
Click to collapse
Yes I have the L09. I tried flashing it several times and each time, it bootloops once then boots up normal.
Just use my tool. So you can then flash the custom Rom.
http://forum.xda-developers.com/mat...custom-recovery-tool-mt7-l10-l10-mt7-t3022424
that fixed in comparison with previous builds ?
Fooox1 said:
Just use my tool. So you can then flash the custom Rom.
http://forum.xda-developers.com/mat...custom-recovery-tool-mt7-l10-l10-mt7-t3022424
Click to expand...
Click to collapse
Can I use your tool without unlocking the bootloader on my MT7-L09?
No, but there will be instructions.
Tried this but failed to install CWM .. seems like all are failing? Is there a certain firmware that the phone needs to be on?
Hi all, i flash cwm_mate7_20150410.img but don't boot in recovery mode.Any idea?
Ciao
looking for CWM touch for Mate7
Hi,
I have a MT7-L09, I unlock bootloader and I installed TWRP but I can't flash anything because I encrypted my phone.
Does this CWM recovery handle mounting encrypted partition?

recovery install problem

Hello
i've just installed the twrp recovery on my lg g4 (after unlock the bootloader of course)
and when i try to boot in recovery mode it doesnt work (it shows me an android logo with an exclamation mark)
plz help me :S
thanks
It did not install properly. Same happened to me. Try
fastboot erase recovery
fastboot flash recovery twrp.img
Then try to boot to recovery using twrp manager app
jkoljo said:
It did not install properly. Same happened to me. Try
fastboot erase recovery
fastboot flash recovery twrp.img
Then try to boot to recovery using twrp manager app
Click to expand...
Click to collapse
thanks for your comment!
but i still have this problem...
jkoljo said:
It did not install properly. Same happened to me. Try
fastboot erase recovery
fastboot flash recovery twrp.img
Then try to boot to recovery using twrp manager app
Click to expand...
Click to collapse
After you have installed TWRP via adb you must boot (or stay there) into revocery and falsh the twrp-xxxx.img as "revocery" (buton down right to change from image to recovery).
hannsheinz said:
After you have installed TWRP via adb you must boot (or stay there) into revocery and falsh the twrp-xxxx.img as "revocery" (buton down right to change from image to recovery).
Click to expand...
Click to collapse
thanks man but i cant boot into recovery... this is the problem... Instead of boot into recovery, it shows me a android logo with exclamation mark..
daniel1803 said:
thanks man but i cant boot into recovery... this is the problem... Instead of boot into recovery, it shows me a android logo with exclamation mark..
Click to expand...
Click to collapse
Try this:
adb reboot bootloader
fastboot.exe flash recovery twrp-xxxx.img
fastboot.exe boot twrp-xxxx.img (same filename as above)
Then flash the same twrp-xxx.img file via "install"
After this you can direct boot into revocery with apps like quickboot, or via Vol-Down, Power-On, or direkt via reboot meneu if you use G4 Tweak Box.
If you are on 6.0 the recovery will never boot up. But don't worry, all you need to do is just download kernel package like SimpleGX, from this package copy the boot.img, then flash it via fastboot. After that let the phone boot up, reboot it to bootloader again and flash twrp.img. If you did it properly the twrp will boot up. REMEMBER to flash full kernel package otherwise you can have problems with your device.
Adam Myczkowski said:
If you are on 6.0 the recovery will never boot up. But don't worry, all you need to do is just download kernel package like SimpleGX, from this package copy the boot.img, then flash it via fastboot. After that let the phone boot up, reboot it to bootloader again and flash twrp.img. If you did it properly the twrp will boot up. REMEMBER to flash full kernel package otherwise you can have problems with your device.
Click to expand...
Click to collapse
is it save to flash the SimpleGX kernel without the included modules in the zip file?
because i only manged to flash twrp for h811 on my h815 with v20d and unlocked bootloader... i am confused
the-erazer said:
is it save to flash the SimpleGX kernel without the included modules in the zip file?
because i only manged to flash twrp for h811 on my h815 with v20d and unlocked bootloader... i am confused
Click to expand...
Click to collapse
Never flash recovery for H811 on H815, there is reason why they are different.. You could have bricked your device. Yes flashing this boot.img is completely safe as long as you flash full package later, otherwise you might have problems with software. I've done so many times without any issue, anyway it's not a softbrick, you always reflash the firmware however be aware of that if you do it wrong and get your phone bricked without access to custom recovery there is no way to recovery your data. My G4 is dead but this is caused by the well know bootloop issue (hardware fail).
Adam Myczkowski said:
Never flash recovery for H811 on H815, there is reason why they are different.. You could have bricked your device. Yes flashing this boot.img is completely safe as long as you flash full package later, otherwise you might have problems with software. I've done so many times without any issue, anyway it's not a softbrick, you always reflash the firmware however be aware of that if you do it wrong and get your phone bricked without access to custom recovery there is no way to recovery your data. My G4 is dead but this is caused by the well know bootloop issue (hardware fail).
Click to expand...
Click to collapse
Thanks for the quick answer... I got a replacement and it ships with v20d twrp for h811 was the only solution to get root... Now i have seen your post... Will try it later... I hope it works
Do you know the reason why we have to flash the kernel? Some poeple can flash twrp without...
edit: i have flashed the kernel but flashing twrp dont want to flash...
the result of fastboot is positive but if i want to boot in recovery the screen stays black and then the phone boots up normal to os...
woult it help to kdz the phone to lolipop?
Gesendet von meinem LG-H815 mit Tapatalk
Adam Myczkowski said:
If you are on 6.0 the recovery will never boot up. But don't worry, all you need to do is just download kernel package like SimpleGX, from this package copy the boot.img, then flash it via fastboot. After that let the phone boot up, reboot it to bootloader again and flash twrp.img. If you did it properly the twrp will boot up. REMEMBER to flash full kernel package otherwise you can have problems with your device.
Click to expand...
Click to collapse
the-erazer said:
Thanks for the quick answer... I got a replacement and it ships with v20d twrp for h811 was the only solution to get root... Now i have seen your post... Will try it later... I hope it works
Do you know the reason why we have to flash the kernel? Some poeple can flash twrp without...
Gesendet von meinem LG-H815 mit Tapatalk
Click to expand...
Click to collapse
Install Twrp Manager from the Play Store and then install Twrp 2.8.7.0 from it.
It's working fine on my H815 v20d
Sent from my LG G4
welder73 said:
Install Twrp Manager from the Play Store and then install Twrp 2.8.7.0 from it.
It's working fine on my H815 v20d
Sent from my LG G4
Click to expand...
Click to collapse
I have no idea how did you manage to install TWRP recovery on official 6.0 firmware since TWRP manager requires root and to root android 6.0 you have to have modified boot image...
the-erazer said:
Thanks for the quick answer... I got a replacement and it ships with v20d twrp for h811 was the only solution to get root... Now i have seen your post... Will try it later... I hope it works
Do you know the reason why we have to flash the kernel? Some poeple can flash twrp without...
Gesendet von meinem LG-H815 mit Tapatalk
Click to expand...
Click to collapse
As I mentioned above in android 6.0 google have modified it as the stock kernel does not allow to use unsigned stuff even though your bootloader is unlocked. So only way to root/install recovery on android 6.0 smartphones is to flash modified boot.img that allows to load unsigned things. If you flash recovery without changing stock kernel you'll not brick your device but the recovery will never open, but flashing superSU might brick your device, Autoprimes flashable zips include modified boot.img I suppose.
Adam Myczkowski said:
I have no idea how did you manage to install TWRP recovery on official 6.0 firmware since TWRP manager requires root and to root android 6.0 you have to have modified boot image...
As I mentioned above in android 6.0 google have modified it as the stock kernel does not allow to use unsigned stuff even though your bootloader is unlocked. So only way to root/install recovery on android 6.0 smartphones is to flash modified boot.img that allows to load unsigned things. If you flash recovery without changing stock kernel you'll not brick your device but the recovery will never open, but flashing superSU might brick your device, Autoprimes flashable zips include modified boot.img I suppose.
Click to expand...
Click to collapse
i have no more idea what to do... i have flashed the kernel... and then recovery but when i want to enter recovery nothing happens it doesnt load. after some seconds the phone boots up normal.
before that i have tried twrp manager but the app crashes every time i want to select the recovery to install.
flashify is same as flashing over fastboot.
what is the difference between the 2 versions of twrp? h811 got another kernel than h815 but why can i load this one but the right for h815 not?
the-erazer said:
i have no more idea what to do... i have flashed the kernel... and then recovery but when i want to enter recovery nothing happens it doesnt load. after some seconds the phone boots up normal.
before that i have tried twrp manager but the app crashes every time i want to select the recovery to install.
flashify is same as flashing over fastboot.
what is the difference between the 2 versions of twrp? h811 got another kernel than h815 but why can i load this one but the right for h815 not?
Click to expand...
Click to collapse
I have no idea honestly, try to reflash the firmware. Recovery doesn't load only if you don't flash boot.img properly.
Adam Myczkowski said:
I have no idea how did you manage to install TWRP recovery on official 6.0 firmware since TWRP manager requires root and to root android 6.0 you have to have modified boot image...
As I mentioned above in android 6.0 google have modified it as the stock kernel does not allow to use unsigned stuff even though your bootloader is unlocked. So only way to root/install recovery on android 6.0 smartphones is to flash modified boot.img that allows to load unsigned things. If you flash recovery without changing stock kernel you'll not brick your device but the recovery will never open, but flashing superSU might brick your device, Autoprimes flashable zips include modified boot.img I suppose.
Click to expand...
Click to collapse
Sorry,I thought he already have root.
Btw,you can't root H815 on MM without unlocking the bootloader...
Sent from my LG G4
the-erazer said:
i have no more idea what to do... i have flashed the kernel... and then recovery but when i want to enter recovery nothing happens it doesnt load. after some seconds the phone boots up normal.
before that i have tried twrp manager but the app crashes every time i want to select the recovery to install.
flashify is same as flashing over fastboot.
what is the difference between the 2 versions of twrp? h811 got another kernel than h815 but why can i load this one but the right for h815 not?
Click to expand...
Click to collapse
just for information i have tested to kdz back to lollipop v10b... downgrade was really easy using lgup but the result was twrp doesnt work... same as marshmallow... btw github had a bug ticket for h811 there was the same only vice versa...
daniel1803 said:
Hello
i've just installed the twrp recovery on my lg g4 (after unlock the bootloader of course)
and when i try to boot in recovery mode it doesnt work (it shows me an android logo with an exclamation mark)
plz help me :S
thanks
Click to expand...
Click to collapse
how do u unlock the bootloader on a LG G4 H811 ver 20i

[HELP] TWRP replaced by stock recovery after updateh

Hello
I'm on MIUI 8.1.2 on my hydrogen and want to flash the latest MIUI 8.1.4.
I've downloaded the recovery rom and flashed it in TWRP but after first reboot TWRP replaced by stock recovery.
Help me what should I do to get out of this issue.
Thanks in advance
Common issue
Boot into edl mode and flash 8.1.3.0 fast boot image and then you will be able to flash twrp again
Something was changed in the bootloader
LiviiYS said:
Common issue
Boot into edl mode and flash 8.1.3.0 fast boot image and then you will be able to flash twrp again
Something was changed in the bootloader
Click to expand...
Click to collapse
Hello where can i find the helium fastboot image to flash twrp again. Because i have no revovery at all after flashing original stock 8.1.6.0 global miui firmware. Thanks
Sent from my MI MAX using XDA-Developers mobile app
valerio.tosti said:
Hello where can i find the helium fastboot image to flash twrp again. Because i have no revovery at all after flashing original stock 8.1.6.0 global miui firmware. Thanks
Sent from my MI MAX using XDA-Developers mobile app
Click to expand...
Click to collapse
I think you don`t need to flash all the fastboot image to can flash TWRP again, just flash via fastboot, place your recovery in ADB folder, rename it recovery.img, fastboot will flashed but it seem that recovery it`s missed but the trick it`s only that don`t boot to recovery if you don`t execute after flash recovery the next command in fastboot: fastboot boot recovery.img, when you boot to recovery wipe cache and dalvik cache if it`s necessary three times untill recover your usual settings like language, bright and others.
Hi
I have flashed twrp in fastboot mode and inserted following command-
fastboot boot twrp.img
But my directly boots to system every time.
Similarly it gets stuck on lenovo boot logo when volume up + power button pressed
If I press volume up + power button again my device gets switched off.
I have followed tutorial but nothing is working
Help, please...

How to permanently install twrp??

Hello everyone,
I tried twrp ...advanced....file manager.... to locate system/bin/ install recovery...etc file to rename or delete it but couldnt find the file!!.
The mi stock recovery keeps overwriting twrp after reboot so i have to reflash twrp using adb everytime i wanna use it
Device is mi max hydrogen miui(9). 8.1.4 beta. and the twrp version am using is 3.1.1.0
ron_hyatt said:
Hello everyone,
I tried twrp ...advanced....file manager.... to locate system/bin/ install recovery...etc file to rename or delete it but couldnt find the file!!.
The mi stock recovery keeps overwriting twrp after reboot so i have to reflash twrp using adb everytime i wanna use it
Device is mi max hydrogen miui(9). 8.1.4 beta. and the twrp version am using is 3.1.1.0
Click to expand...
Click to collapse
Try to flash with fastboot flash recovery (twrpname).img
himul said:
Try to flash with fastboot flash recovery (twrpname).img
Click to expand...
Click to collapse
Well,this is how i always flash twrp but stock mi recovery keeps coming back after a reboot!
ron_hyatt said:
Well,this is how i always flash twrp but stock mi recovery keeps coming back after a reboot!
Click to expand...
Click to collapse
The first boot after flashing TWRP need to be into recovery so TWRP could use his scripts to block the automatic restore of the stock recovery.
Also try the last TWRP version 3.2.1
himul said:
Try to flash with fastboot flash recovery (twrpname).img
Click to expand...
Click to collapse
bttcp12 said:
The first boot after flashing TWRP need to be into recovery so TWRP could use his scripts to block the automatic restore of the stock recovery.
Also try the last TWRP version 3.2.1
Click to expand...
Click to collapse
I used adb commands.:
fastboot devices.....fastboot recovery recovery.img......fastboot boot recovery.img.........Twrp boots ok ......from twrp menu i choose boot into recovery or turn off......same result with both.....when i hold vol up button+power.....the phone boots into mi recovery 3.0!!
Am I doing something wrong here?
ron_hyatt said:
I used adb commands.:
fastboot devices.....fastboot recovery recovery.img......fastboot boot recovery.img.........Twrp boots ok ......from twrp menu i choose boot into recovery or turn off......same result with both.....when i hold vol up button+power.....the phone boots into mi recovery 3.0!!
Am I doing something wrong here?
Click to expand...
Click to collapse
I only use
Code:
fastboot flash recovery twrp.img
Then
Code:
fastboot reboot
Entering recovery with the volume up key (at the same time that you click enter into adb)
Then into recovery reboot.
After booting into recovery install supersu (flash zip file) ,then boot into system.. try it..

After i flashed Twrp succesfull i try to get in it but its stuck

Hello, I have a Wileyfox Spark + but there is no path where i can post this question.
I try to install Twrp. but if its flashed and i try to boot into it, its stuck on the wileyfox logo and if i boot my phone first normmaly its ok but then its the stock recovery.... i try to do the key combo but then its stuck on the Wileyfox logo.
Can anyone help me?
Super thanks
(I want to root my phone but it dont work with an app now i gonna try to do it with TWRP but if that dont work to install iam stuck) very THX!
Gr. Jurre
Did you unlock bootloader before flashing?
Unlocked
xda jeffery said:
Did you unlock bootloader before flashing?
Click to expand...
Click to collapse
I have unlocked it....
Thx for the reply.
First download the twrp flash it via the command: fastboot flash recovery recovery.img and then after flash type fastboot boot recovery.img if twrp asks for sliding sliding to consent system partition modification.

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