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Could not load boot after flashing twrp in realme 3 rmx1821

I recently unlocked bootloader on my phone successfully and flash twrp recovery which is also successfully installed using ADB.
But when I want to enter into recovery or boot it always show only one screen fastboot verify ok..
When I restart it says orange mode your phone has been unlocked .
I can use my mobile but could not enter into twrp recovery or boot. Plz help I am in stress

relock bootloader but no OS help please

hello,
i did unlock the bootloader for my zenfone 7 pro
and installed twrp recovery then rooted via magisk
cuz I wanted voLTE but it didn't work for me so I wanted to be back to stock
I relock the phone using fastboot command
fastboot oem asus-lock
it did relock my phone
but there is no OS nor Recovery !
when I power my phone on the fastboot UI appears. even if I select recovery nothing changes. opens fastboot only
how to re install the firmware ? help plz

in case anyone has the same problem.
i did solve it by flashing the (raw) firmware via fastboot ( Flash_AFT method )

M-772007 said:
hello,
i did unlock the bootloader for my zenfone 7 pro
and installed twrp recovery then rooted via magisk
cuz I wanted voLTE but it didn't work for me so I wanted to be back to stock
I relock the phone using fastboot command
fastboot oem asus-lock
it did relock my phone
but there is no OS nor Recovery !
when I power my phone on the fastboot UI appears. even if I select recovery nothing changes. opens fastboot only
how to re install the firmware ? help plz
Click to expand...
Click to collapse
There are new guides on how to get volte if you want to try again.
[Guide] Easy method to Enable Volte (with root) on Tmobile and maybe other networks on Android 11 and maybe 10
So first you have to root. I used twrp and magisk. There are guides on how to do that you can find by searching around. Then once you do that, follow these directions, What I did was manually entered all of these setprop commands below, on the...
forum.xda-developers.com
This is one but there are others if you need the help.

After relock bootloader i can send phone to warranty?

I tried to relock the phone with the command "fastboot oem asus-lock", but it shows "waitting for any device" and my phone just sit there and do nothing..
Any other method to relock the Zenfone 7 pro?

M-772007 said:
hello,
i did unlock the bootloader for my zenfone 7 pro
and installed twrp recovery then rooted via magisk
cuz I wanted voLTE but it didn't work for me so I wanted to be back to stock
I relock the phone using fastboot command
fastboot oem asus-lock
it did relock my phone
but there is no OS nor Recovery !
when I power my phone on the fastboot UI appears. even if I select recovery nothing changes. opens fastboot only
how to re install the firmware ? help plz
Click to expand...
Click to collapse
I believe that relock is impossible and but to make the device recovery to installed status of stock rom keeping with unlock bootloader.
Please see my post. May make it help or not.
When I try to burn rom with TWRP, img burns but it doesn't start and zip gives an error and cannot burn.
When I first burned custom ROM (unofficial AEX), it did not start, so when I deleted the data from TWRP, it seems that I deleted things that should not be erased, so even if I burn it from the zip file, with the error message in the image below I...
forum.xda-developers.com

FLASH STOCK ROM HAVING TWRP USING SP FLASH TOOL(OPPO F9 PRO)

I have an oppo f9 pro ,oppo phones after 2016 are not given fastboot binaries means impossible to access fastboot mode,so if i can't access fastboot mode i can't use it to unlock bootloader and hence i can't install cutom recoveries/roms,root phone .,etc. But i found a thread on XDA where someone was asking how to root OPPO f3 plus(qualcomm based,launched in 2017) and there were people telling that they have rooted it succesfully by flashing stock rom using MSM download tool but i think that rom was modified such that when that guy flashed it using msm tool he was able(AND BY ABLE I MEAN TWRP GOT INSTALLED AUTOMATICALLY) to install custom recovery (twrp recovery) just by flashing that stock rom and also the bootloader got unlocked in that process.
But my phone is baed on mediatek so i have to use sp flash tool ,but my question is that is it possible for me to do the same for my OPPO f9 pro,it has no fastboot mode which is the main problem as i can't unlock bootloader which i easily did in my mi phone using fastboot mode ,but since oppo phones don't have that mode ,it means bootloader can't be unlocked by this process ,but is it really possible to get the bootloader unlocked+twrp installed just by flashing stock rom of my device in it using sp flash tool , i don't know a lot but i think that guy just did something like modifying the stock rom in suck a way that flashing it installs the stock rom+twrp+unlocks bootloader
SO, IF ANYONE CAN HELP ME TO DO THAT I WOULD BE REALLY THANKFUL IM STRUGGLING FROMA LOT OF DAYS TO INSTALL CUSTOM RECOVERY AND HENCE DO WHATEVER I CAN WITH IT AND ALSO REGRETTING WHY I BOUGHT AN OPPO PHONE ,
THANK YOU SO MUCH PLZ HELP IF U CAN:

Can't Flash TWRP

Hi friends, I own one Asus Zenfone max pro m1 and I recently wanted it's bootloader to be unlocked and I tried the unofficial method but didn't worked. So I chose the official method. It wasn't a good experience because I was successful after several attempts. Don't know why... But after installing and unintalling and then reinstalling the unlock tool several times somehow I managed to unlock the bootloader. Now it's showing fastboot mode instead of csc fastboot so I believe it's bootloader is unlocked.
But as I tried to flash twrp using Bugjaeger app from another phone(since I think I'm having issues with usb 3.0 port on my lap) it's showing "Flashing not allowed in Lock state".
How can I be sure to know if my bootloader is unlocked or not? And whatif I flash rom directly(using adb/fastboot) without twrp with Corvos OS? Will O be stuck on a boot loop?

I finally came to solve my problem by trying to unlock the bootloader again and again by official method. And after 3 attempts it was succesfully unlocked (unlocked properly). I could flash twrp without any difficulties and Im on Abhix Rog version now..

Can't use adb after unlock bootloader again

When I first time unlock the bootloader on my Galaxy S10e (Exynos), I can easily flash custom recovery and ROM, I've tried many custom ROM but then back to OneUI and locked the bootloader
Then the 2nd time I unlocked the bootloader but ADB isn't recognized my phone in download mode anymore, I've tried all kinds of drivers, please help me
(ADB still recognized in recovery and normal OS)
[sorry for no picture]