That's the Android 10 coral.img. The test version: " twrp-3.5.0-0-test1-coral.img " in the OP is the last version I downloaded and works for me.
Does the test version of TWRP work for installing roms? I would really love to know this! From what I've read I'm guessing since it's in early stages still and there has only been one user report a successful rom install that installing roms isn't working yet...?
So you were having problems being stuck because you tried to flash the wrong img..but now it's working? I guess you have to be running stock android to get results, correct?? I tried both images and neither would work. It's always stuck on the splash screen, then Scorpion recovery replaces it automatically after a reboot.
Just FYI, you don't need TWRP or another custom recovery to install kernels. If rooted you can use EXKM or FKM, and if not rooted you can see if there is an available .img version (rather than .zip) of the kernel and if so flash it through fastboot.That would be awesome. Honestly if there's a way to get this installed, I'd consider going back to stock if it made a difference. I'm using ScorpionRom. Their custom recovery doesn't let you install kernels. That's the thing I miss. I think development in general on the Pixel 4XL is largely depending on this problem getting figured out.
I had ScorpionRom installed at the of flashing. Everything booted fine after the install and I flashed Cleanslate kernel.I was able to flash TWRP, then boot, enter pin to decrypt data, then adb push image to Downloads and install ramdisk from advanced options. I think it was failing before because I didn't use "fastboot flash boot_b twrp.img". I wasn't choosing a slot and I was just using the boot command by itself "fastboot boot twrp.img --slot all".
I won't speak for the dev(s) but you do realize very recently are able to boot and somewhat use TWRP under 11. this means 12 beta may not be ready anytime soon. I honestly do not know, I am not the dev of TWRP so I cannot speak for them but I am pointing out the 11 fact to set expectations accordingly. For me personally, I was only able to get it working under 11 in the last few weeks, so I'd be patient and keep checking back.
Sorry haven't been on here in a while. After updating to the June patch (haven't done it for July yet) I downloaded the full zip and extracted the boot image. Used magisk manager to patch it and then used fast boot to boot into TWRP. From TWRP I selected install image which allowed me to select an image to patch as magisk manager does and selected the just patched magisk boot. After it was patched by TWRP I moved it to my computer and rebooted into fastboot and flashed it. Worked beautifully. Can boot directly into TWRP from the OS either using a root terminal command or a root rebooter app (simple reboot). I can post the logs from the last time I backed up as a sort of proof.
Flash custom kernel with inbuilt touch driver