Return to stock? - Samsung Galaxy S20 / S20+ / S20 Ultra Questions &

Cant seem to figure out how to relock the bootloader AND flash the stock firmware for my G988B.
I have all the files, but when I start ODIN, it seems to just freeze (no progress bar on phone, no changes in ODIN). I have a tried flashing BL,AP,CP,CSC with the unlocked bootloader and with the bootloader relocked via the bootmenu. The phone still boots into the stock rom when the bootloader is unlocked, but I want to ensure that it updates hence, the relock.
thoughts?

Is there a stock vbmeta i need to flash in ODIN after relocking (via the hold VOL+ menu boot option) and before flashing the stock firmware?

So now I am trying to flash anything, and its failing with
SECURE CHECK FAIL : (PIT)

Related

[Q] Flashing FTF in Locked R800i

I want to revert all the settings and everything to stock, I have the phone rooted, bootloader locked, what can I do?
You can still flash a stock Sony Rom (ftf) as it is signed and will work with locked bootloaders, as long as it's the right one for your device.
Sent from my R800i using XDA
Open Flashtool and go into Flash Mode, Hold down Back button while you connect the USB cable, then select firmware in the dialog and wait for it to flash.
Thanks, I've done that. I wasn't just sure if I could use Flash Tool with locked bootloader

[Q] Getting back to stock recovery

Hi ! I just unlocked bootloader of my phone (Micromax Canvas A1 with Android One) yesterday, flashed a Custom CWM Recovery and Rooted it. But now, I want to get back my warranty by unrooting it. I think the following steps will work in getting back my warranty:
1) Unroot Android
2) Flash stock recovery
3) Relock bootloader
I can unroot and relock the bootloader on myself. But I don't have stock recovery image for my phone. Can anyone here provide me the Stock Recovery image file for this phone?
Moreover, I have one more Canvas A1 handset which is completely in factory mood (and so under warranty unlike my rooted Android one phone ). Is there any way to create a flashable rocovery image file from this phone?
Anyways, I will be very happy and thankful if only anyone could provide me the Stock Recovery Image file for this phone .
Thanks in advance !
Here's the stock recovery link which I had uploaded: http://www.mediafire.com/?cr10jbo9f6gnh32 (rename it to recovery.img)
You'll need to flash it from ADB mode (you need unlocked boot loader in this case) or just flash using SP Tools (v.5.1424) (if you need scatterer file, ask me)
Actually, flashing stock recovery and locking boot loader does not give warranty back.
However you'll need stock recovery to flash lollipop update when arrived.
To get warranty back, you need to download complete stock ROM and flash it using SP Tools in firmware upgrade mode to reset the flash counter.

Odin failing to Flash Stock Firmware

I flashed DevBase rom, everything booted up ok. Then I rebooted the phone FRP and oem somehow got tripped on. Im trying to flash stock firmware via odin. It always fails on kernel.img. My phone is saying its rev2 and all the stock firmware I find seem to be rev1. Any ideas would be very appreciative
Download mode saying my S:2 K:2 and B:2
That looks like system, kernel and bootloader and version 2. All the stock firmware that I have downloaded all fail saying that its version 1.

how to remove root, lock bootloader and flash stock rom

Phone is rooted woth twrp, unlocked bootloader and a custom pixel rom. I need to unroot the phone and lock bootloader if possible.
Anyone?
I think if you flash the stock OS from OnePlus' website and reboot it will install their stock recovery as part of the process and turn you back to stock so you can re-lock the bootloader safely. Someone wrote a guide to follow with more details: https://forum.xda-developers.com/oneplus-5t/how-to/guide-restore-to-complete-stock-relock-t3712739

Mate Se Back to Factory stock?

I'm rooted with frp unlocked and so on with oreo. I need to go all the way back to out of the box stock setup to download the latest updates. I'm on oreo and have a ton of reading but I need to be guided into a set of instructions to get this restore done.
Please help.
Thx!
Via magisk uninstaller, uninstall and your boot will be fine
Also, you can flash stock boot and recovery to be on full stock
Will this allow me to relock and do ota updates? Basically I need to be able to use the factory recovery partition incase of failure. Currently due to the unlocked phone the use of the recovery bricks the phone. And where can I get these stock recovery partitions at?
Doesn't matter if your BL is locked or unlocked. As long as you have stock recovery and stock boot, you will be able to install OTA
Can you e plain a bit more detail? Thx! How the process should go
What are the commands for stock boot and recovery images through the recovery screen. The white screen that shows bootloader and frp status.... And possible link to those specific files would be great.
Erecovery? How to reflash?

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