Newbie here, I did exactly that. I have a samsung galaxy note10 exynos. My phone keeps jumping back to this downloading screen even when I try to cancel (restart phone) by holding down the side keys. It says this at the top left corner of the screen:
recovery: Error validating footer (6) CUSTOM RECOVERY VBMETA N970F XXU1 ASG0. 24967245R
I am able to get into the custom OS installation screen (don't know what it's actually called but second picture) by letting the battery drain so that the phone turns off and then holding volume up + volume down key and plugging the phone into my laptop with USB.
I tried to install TWRP with Odin and now my phone is stuck and can't boot. I went to https://twrp.me/samsung/samsunggalaxynote10.html and even there it says "Flashing TWRP without first flashing a vbmeta image with verity disabled will render your device unable to boot." Does anyone know how to fix this? Thanks in advance.
I think you can follow this steps, I consider your Note similar to S10
Download latest stock firmware for your phone, extract the 4 files BL, AP, CP and CSC, connect to pc and press the combo key to download mode (i don't know for your Note, bur for S10 is bixby+vol.down+power for some seconds); when you see the picture "downloading" you can start Odin to flash the stock firmware (BL+Ap+C+Csc on Odin).
When your phone restart, wait for some minutes to see stock android start page.