Question about the bootloader, LGUP, LG Bridge and OTAs - G4 Q&A, Help & Troubleshooting

Hello there!
I have a locked H815 and I've had many issues with it, especially when I upgraded to 6.0 and V20D. I've got it back from repairs and it's been downgraded to Android 5.1.
I saw that it's ok to use LGUP and flash 5.1 and 6.0 firmwares and that doesn't require an unlocked bootloader nor root.
Now, I want to ask if I unlock my bootloader, will I still be able to receive OTA updates? Or updates through LG Bridge?
Also, if I install a custom ROM right now, will I be able to successfully flash the stock firmwares and have the phone as it was just with an unlocked bootloader?
Thanks!

Peshyy said:
Hello there!
I have a locked H815 and I've had many issues with it, especially when I upgraded to 6.0 and V20D. I've got it back from repairs and it's been downgraded to Android 5.1.
I saw that it's ok to use LGUP and flash 5.1 and 6.0 firmwares and that doesn't require an unlocked bootloader nor root.
Now, I want to ask if I unlock my bootloader, will I still be able to receive OTA updates? Or updates through LG Bridge?
Also, if I install a custom ROM right now, will I be able to successfully flash the stock firmwares and have the phone as it was just with an unlocked bootloader?
Thanks!
Click to expand...
Click to collapse
i beleive so, but youll also loose warranty.

raptorddd said:
i beleive so, but youll also loose warranty.
Click to expand...
Click to collapse
Thanks! That's what I wanted to know.

Related

Am I screwed with lollipop

Ok so I just bought the LG G3 AT&T version and it already have the OTA version of lollipop. Is it still possible to unlock the bootloader or am I locked out? Do I need to do a TOT back to old firmware or what? Thanks!
joshuadjohnson22 said:
Ok so I just bought the LG G3 AT&T version and it already have the OTA version of lollipop. Is it still possible to unlock the bootloader or am I locked out? Do I need to do a TOT back to old firmware or what? Thanks!
Click to expand...
Click to collapse
You can root and install TWRP without downgrading.
http://forum.xda-developers.com/lg-g3/general/guide-update-to-lollipop-root-bumpd-twrp-t3048845

LG-812 - Possible to install CM14?

Hey everyone, I haven't done any phone modding since getting an LG G4 but I'm wondering if it is yet possible to install CM14 (Android 7.1) on the LG G4 yet?
I know the bootloader was locked and probably still is, but is there anyway to make this happen yet?
Can I flash down to Lollipop, gain root and then flash the new CM14 even though it says you need an unlocked bootloader for the install?
I really hate that this Canadian version still has a locked bootloader!
no you can't. sorry

Rooting H815T Marshmallow

Hey all. So basically I recently purchased the H815T Australian optus model. It was initially on Lollipop but updated to MM & I need root so I can restore all my data from my previous device but seems I need to unlock the bootloader. Unfortunately it couldn't be done because the H815T isn't supported on the LG unlocking website. Is there another way to unlock the bootloader or rooting it? Please help guys, I really need to retrieve my data but can't do so till there is a method to root. Or would I have to downgrade to Lollipop & root? I'd immensely appreciate some assistance with this, cheers.
Stevo001457 said:
Hey all. So basically I recently purchased the H815T Australian optus model. It was initially on Lollipop but updated to MM & I need root so I can restore all my data from my previous device but seems I need to unlock the bootloader. Unfortunately it couldn't be done because the H815T isn't supported on the LG unlocking website. Is there another way to unlock the bootloader or rooting it? Please help guys, I really need to retrieve my data but can't do so till there is a method to root. Or would I have to downgrade to Lollipop & root? I'd immensely appreciate some assistance with this, cheers.
Click to expand...
Click to collapse
no bootloader unlock yet....
you need to be on LP.
but... you also need to know if you can downgrade. i for instance cant. there antirollback version you need to find out . if you can..
raptorddd said:
no bootloader unlock yet....
you need to be on LP.
but... you also need to know if you can downgrade. i for instance cant. there antirollback version you need to find out . if you can..
Click to expand...
Click to collapse
Thanks for your help. I really enjoy being on Marshmallow so don't really want to downgrade. Thankfully I got most of my whatsapp messages through google drive backup & most of the other apps did have some form of cloud storage. I'm gonna stick to MM till a rooting method does eventuate.

Need help about 6.0.1 update.

Well I bought my zenfone 2 it's been 1 year ago, and on the end of 2016 I rooted it because I don't had hope on 6.0.1 update anymore since it was full of bugs. I still on 5.0 and now I want to update to 6.0.1 but I don't know how. My bootloader is unlocked and I have TWRP I was planning on flash the stock recovery and then push the update but there is the problem. Can I update with unlocked bootloader? Or I'll need to lock it again then update? I really can't bare with the 5.0 firmware anymore and I need to update. But since I don't have a constant access to a computer I don't want to brick my phone.
Yes, I tried search for tutorials online but all I get is how to unlock bootloader on zenfone 2 on the 6.0 firmware and how to root it..but I don't get none answer to my question so I hope someone here can help me.
Tayanarak said:
Well I bought my zenfone 2 it's been 1 year ago, and on the end of 2016 I rooted it because I don't had hope on 6.0.1 update anymore since it was full of bugs. I still on 5.0 and now I want to update to 6.0.1 but I don't know how. My bootloader is unlocked and I have TWRP I was planning on flash the stock recovery and then push the update but there is the problem. Can I update with unlocked bootloader? Or I'll need to lock it again then update? I really can't bare with the 5.0 firmware anymore and I need to update. But since I don't have a constant access to a computer I don't want to brick my phone.
Yes, I tried search for tutorials online but all I get is how to unlock bootloader on zenfone 2 on the 6.0 firmware and how to root it..but I don't get none answer to my question so I hope someone here can help me.
Click to expand...
Click to collapse
flash stock bootloader LP( boot, ifwi, recovery, fastboot). factory reset device. unlock bootloader with official app. and sideload latest MM. later on flash twrp.

Can I downgrade Mate SE back to Nougat from Oreo with a locked bootloader?

Been trying to unlock my bootloader to no avail, but on the other hand, I can't seem to find a stock Nougat rom that I can install on stock recovery. Should I just return this phone, get a new one and obtain unlock code before updating to Oreo? Or is there any way to downgrade back to Nougat on locked bootloader?
Thanks.
I think it's possible with hisuite.
Trecoolius said:
Been trying to unlock my bootloader to no avail, but on the other hand, I can't seem to find a stock Nougat rom that I can install on stock recovery. Should I just return this phone, get a new one and obtain unlock code before updating to Oreo? Or is there any way to downgrade back to Nougat on locked bootloader?
Thanks.
Click to expand...
Click to collapse
Yes it is possible,connect device to pc with usb ,internet is on and open Hisuite and connect device after connected click on update so
you got option to downgrade OREO to Naught.
anilsrj said:
Yes it is possible,connect device to pc with usb ,internet is on and open Hisuite and connect device after connected click on update so
you got option to downgrade OREO to Naught.
Click to expand...
Click to collapse
well that method doesnt work, atleast not for me.
once you click update there no option to downgrade, all mine says is that ive got the newest version
cdmanproductions said:
well that method doesnt work, atleast not for me.
once you click update there no option to downgrade, all mine says is that ive got the newest version
Click to expand...
Click to collapse
what is your current version..
anilsrj said:
what is your current version..
Click to expand...
Click to collapse
8.0.0.341 on the phone
8.xxxx on hisuite, but I also tried 5.xxx and still no option
Trecoolius said:
Been trying to unlock my bootloader to no avail, but on the other hand, I can't seem to find a stock Nougat rom that I can install on stock recovery. Should I just return this phone, get a new one and obtain unlock code before updating to Oreo? Or is there any way to downgrade back to Nougat on locked bootloader?
Thanks.
Click to expand...
Click to collapse
There is service rom that will flash with locked boooader, and one that is nougat. But it will leave you with strange build number. But should allow for dc-unlocker to read your code.
I was unaware that some trouble with reading the code in Oreo existed. But just got confirmation in other thread that service rom roll back helped
Thanks everyone, I ended up returning the phone and getting a new one. Read bootloader code from nougat, updated to oreo and unlocked everything no probs.
Trecoolius said:
Thanks everyone, I ended up returning the phone and getting a new one. Read bootloader code from nougat, updated to oreo and unlocked everything no probs.
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Click to collapse
Bro.. How could u downgrade ur phone?? Mine is Indian variant bnd Al10c675

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