Develop Bugs

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?

Confused About Bootloader And Unlocking? Is mine outdated?

Ok so I was reading an article and now I'm confused. I see there are two ways to unlock a phone...the regular unlock command and an unlock critical command. From what I understand the unlock critical command is for updating the bootloader? When would I want to do this? I was on the Android P final beta and because official Pie release was delayed here in Canada I decided to just unlock and flash Pie manually. I did this and then relocked the bootloader. But is my bootloader outdated now? Confused. ?

If you keep the bootloader unlocked your bootloader will never go out of date, otherwise the bootloader will not be updated on subsequent stock ROM updates. I personally recommend unlocking the bootloader using both commands and keeping it unlocked. You'll have a minor annoyance in that you'll have a warning pop up prior to boot about the bootloader being unlocked, but I believe avoid a major annoyance in Factory Reset Protection being disabled with the bootloader unlock.

Ok. So just unlock using both commands? Do I just enter in right after the other? How does the bootloader get updated?

Also does leaving the bootloader unlocked stop Google Pay and some banking apps from working?

Enter both commands, one after the other. The bootloader, even if it has no updates, is included with every copy of the stock ROM you download from Google. It will also be included with any OTAs that come directly to the device. You'll have to discover for yourself whether Google Pay and your banking app are affected, because I simply do not know. I don't use my device for banking.

Can i lock the bootloader after installing a custom rom?

i was wondering if i unlocked the bootloader and installed a custom rom i`m not willing to change soon, can i lock the bootloader again while i have this rom?

iHookar said:
i was wondering if i unlocked the bootloader and installed a custom rom i`m not willing to change soon, can i lock the bootloader again while i have this rom?
Click to expand...
Click to collapse
Certainly you can if you are prepared for a bricked device later. I mean, it is not advisable to lock the bootloader if you have a custom ROM since any issues arise later, you will not be able to solve them. In addition, even if you manage to unlock the bootloader again in such a scenario, you will lose all your data including files, photos, videos etc.

If you properly sign the firmware, you don't even have to unlock the bootloader, see https://forum.xda-developers.com/oneplus-3t/how-to/guide-custom-kernels-roms-recoveries-t3572525

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..

One-click-root in Moto G5 XT1672

Would there be a way to do one-click-root on the Motorola Moto G5 (XT1672) or another way that is easy and does not do a factory reset? Thanks!

vanhead said:
Would there be a way to do one-click-root on the Motorola Moto G5 (XT1672) or another way that is easy and does not do a factory reset? Thanks!
Click to expand...
Click to collapse
I really don't know how this is going from root very well, but as I understand it, you need to unlock the bootloader of the device (which requires a factory reset). If you already have the bootloader unlocked, try KingRoot, The truth is the only root of a click that I know, I have not really tried it on this device, but on an old phone, and it worked fine. The only problem I have had and I do not know if it is the fault of the device or KingRoot, and is that when I try to uninstall an application which I gave it the root permissions, the phone restarts, to uninstall an application I had to deny it permissions and then I could uninstall it, I repeat, I do not know if it is a problem that only happens to me
Postdata: Sorry for my english

vanhead said:
Would there be a way to do one-click-root on the Motorola Moto G5 (XT1672) or another way that is easy and does not do a factory reset? Thanks!
Click to expand...
Click to collapse
Rooting the phone does not require a factory reset but unlocking the bootloader does
So if you haven't unlocked the bootloader you will have to factory reset it during the process
If the bootloader is already unlocked you do not need to factory reset your device again in order to root it
Magisk should be the only way you should root your device - do not use other methods like kingroot as this has bloat and is not systemless (meaning it alters the system partition)
You need to root with magisk in order to maintain the system partition in its original state in order to pass basic integrity & to be able to pass cts profile (may need a magisk module) and to hide the fact you are rooted from apps that will not work if your device is rooted

TheFixItMan said:
Rooting the phone does not require a factory reset but unlocking the bootloader does
So if you haven't unlocked the bootloader you will have to factory reset it during the process
If the bootloader is already unlocked you do not need to factory reset your device again in order to root it
Magisk should be the only way you should root your device - do not use other methods like kingroot as this has bloat and is not systemless (meaning it alters the system partition)
You need to root with magisk in order to maintain the system partition in its original state in order to pass basic integrity & to be able to pass cts profile (may need a magisk module) and to hide the fact you are rooted from apps that will not work if your device is rooted
Click to expand...
Click to collapse
Thank you for your help. I tried several One-click-root, none worked, so I researched, they only work on android 7.
Could you tell me if it is possible to Downgrade from Android 8.1 to 7 without unlocking the bootloader? All the videos I find, the bootloaders are already unlocked.

vanhead said:
Thank you for your help. I tried several One-click-root, none worked, so I researched, they only work on android 7.
Could you tell me if it is possible to Downgrade from Android 8.1 to 7 without unlocking the bootloader? All the videos I find, the bootloaders are already unlocked.
Click to expand...
Click to collapse
As mentioned before - you cannot root a device without unlocking the bootloader!
Why do you want a one click root? They are buggy & full of bloatware
Magisk should be the only method you should be using to root a device - either flashing through twrp or by patching the kernel and flashing the patched image through fastboot
What ever method you choose you need an unlocked bootloader to root!
Why would you want to downgrade? You can flash all parts of a firmware image except gpt & bootloader but again you might need an unlocked bootloader to do this but I don't see the point

TheFixItMan said:
As mentioned before - you cannot root a device without unlocking the bootloader!
Why do you want a one click root? They are buggy & full of bloatware
Magisk should be the only method you should be using to root a device - either flashing through twrp or by patching the kernel and flashing the patched image through fastboot
What ever method you choose you need an unlocked bootloader to root!
Why would you want to downgrade? You can flash all parts of a firmware image except gpt & bootloader but again you might need an unlocked bootloader to do this but I don't see the point
Click to expand...
Click to collapse
In fact, since i need to unlock the bootloader to root, for now, it wouldn't be a good option for me.
But there are apps that I really need and that don't work correctly on Android versions above Nougat, if I could get Downgrade without losing data, that would help me immensely for now.
Is there a possibility that I can downgrade to android 7 with the locked bootloader ? What can go wrong? Brick?

vanhead said:
In fact, since i need to unlock the bootloader to root, for now, it wouldn't be a good option for me.
But there are apps that I really need and that don't work correctly on Android versions above Nougat, if I could get Downgrade without losing data, that would help me immensely for now.
Is there a possibility that I can downgrade to android 7 with the locked bootloader ? What can go wrong? Brick?
Click to expand...
Click to collapse
You would have to format data - it would bootloop otherwise and I've already said. Flash all parts of firmware except gpt and bootloader however it may not flash as your bootloader is not unlocked
If the flashing goes wrong and your bootloader is not unlocked you will not be able to recover the device without taking it to a repair shop
My advice just don't bother - if you want to mod your phone unlock the bootloader!
And what app doesn't work above nougat?