Develop Bugs

How do we install twrp on h815?

Now since our Lg g4 has been recently rooted how can we install twrp on the h815 without the bootloader being unlocked?

You can't flash TWRP without unlocked bootloader.

Can't root access unlock the bootloader?
Pardon my ignorance of the platform, but can't root access be used somehow to unlock the bootloader? How is it locked?
On a related note, is there a simplified explanation somewhere of all the various layers of the Android experience? I have at least a basic understanding of the BIOS/EFI/LILO/GRUB/kernel/init boot process of a regular computer, but when I was first told about the steps required to install a custom ROM (e.g., HyperDriveOTA or CyanogenMod), it seemed confusing and much more complicated than the standard PC boot sequence. Bootloaders, recoveries, and launchers, oh my!
Thanks.

then how to unlock bootloader (non-EU 815)?

You can't unlock it. There has been no way found yet.

Rooting the H815: Should I unlock the bootloader or not?

I have received my new LG G4 H815 (EU) phone today and I definitely want to root the phone. Now I'm asking myself whether I should unlock the bootloader or not.
As far as I understand, there are two completely different options for getting root access to the device:
1. Register on LG site, officially unlock bootloader, install TWRP image via fastboot, install root via TWRP
2. Walk through the instructions in this thread:
http://forum.xda-developers.com/g4/orig-development/root-tmo-vzw-intl-variants-soon-root-lg-t3164765
According to the thread you should disable OTA upgrades after rooting it and there is always the possibility that LG patches this rooting method with future Android Upgrades. However, I do want to upgrade the Android system image from time to time (LG will probably provide an upgrade to Android 6.0 sooner or later). Will upgrading the Android system (without loosing root) be less problematic when I unlock the bootloader now? As far as I understand it so far, you can easily root it again after an upgrade if you have unlocked the bootloader. Is that correct? Can I still use OTA upgrades when the bootloader is unlocked and TWRP is installed? I don't mind running fastboot to reinstall TWRP after an upgrade but I don't really like to manually download each Android upgrade from shady mirror sites instead of using the official LG OTA updater.
I do know that unlocking the bootloader will void the warranty and that some Apps may refuse to work no an unlocked device. I'm ok with that and I want to have the phone permanently rooted and install updates (without loosing root) with as little trouble as possible.
Since unlocking the bootloader will wipe everything, I want to do it either now (before setting up the phone) or never. So what would you recommend?

relock bootloader with customised rom or rooted OxygenOS?

Hi
I noticed OnePlus 3 does NOT allow user to have fully working phone when one re-lock bootloader with customised recovery or modified ROM. I would only assume there is security feature put in and checking the integrety of the ROM during boot. Did OxygenOS get digitally signed? Does this mean we don't have any method to root the OxygenOS and yet keep bootloader locked?
The reason I like to keep bootloader locked is becuase it's much more secure, otherwise, anyone can took the phone reflesh the recovery and have full access to my contents. Once they are done, they can simply swap it back without me notice anything.
I have done this with Nexus 5.
Any ideas for achieve below as end result?
* bootloader locked, running OxygenOS, and have SuperSU installed
* bootloader locked, running any ROM, and have phone rooted
Thanks

You could try to root your phone with KingRoot, which allows having your device rooted without a Custom Recovery or unlocked device.

Do we know what method is KingRoot using for this?

CustomROM possible without root and (re)locked bootloader?

Hi,
Long story short:
is it possible to install customROM without root and to (re)lock the bootloader, and are there experiences with a similar situation where Apps check for closed bootloader and root (and stop working if detected)?
=> Goal: activate WiFi-Calling as my provider tuned down 2G-transmitpower due to the 5G-advances (without having enough 3G-coverage to make calls on UMTS-net)... BUT: I'm using two banks; one uses a PhotoTAN-App, that stops working if it detects an open Bootloader, the other Bank-App checks for Root & open Bootloader, and likewise stops working if detected. I have no idea about the PhotoTAN and Magisk, but the 2nd bank confirmed they checked rooted devices with Magisk, and that it does not work with it....
Thus, if I go for a CustomROM, I need to be sure that I can run it unrooted and with a locked bootloader....
Is there a way to install a CustomROM on the 5X with (re)locked bootloader and without root?
(or, if not possible: is there a way I can activate WiFi-Calling on StockROM if said one does not have the Carrier-Entitlements?)
Thanks for the help

@theunlucky: you don't need root to flash a custom ROM, only an unlocked bootloader. IMO you can lock it after flashing ROM.

rp158 said:
@theunlucky: you don't need root to flash a custom ROM, only an unlocked bootloader. IMO you can lock it after flashing ROM.
Click to expand...
Click to collapse
Are you sure about locking the bootloader after flashing a CustomROM? I've read several threads now, and it seems a locked BL only works with StockROM?

Not sure, therefore IMO IMO a locked BL prevents flashing CustomROM, not running. Try. If it doesn't work, you unlock BL again (triggers factory reset). In the worst case you've to flash latest firmware for a clean base..

some questions.

hi and hello all. its been a while.
just picked up a unlocked 6.1 ta1045 .
first question is its fully carrier unlocked and updated to 9. can i bootloader unlock? The paid way still?
also if unlocked is it reversible? like can i still flash stock firmware and update?
is firmware even available?
what pc apps do you use?
anyone.......................................anyone bueller?