Is there a manual way to install this? I've got an unlocked bootloader, I was rooted but I couldn't get this update to install, I keep getting "Installation problem" and no real details. So I restored my original boot.img which I'd backed up. So now my phone isn't rooted and yet I'm still encountering the same exact error. The only thing I can think of is the unlocked bootloader, which sucks. I'll have to jump through some serious hoops to go back to 100% stock (because the userdata will be lost). Hoping somebody has found a way to just manually flash this somehow.
No way to manually flash any OTA or updates on this phone. Either your boot partition isn't stock, your recovery partition isn't stock, your reserve partition is missing or is the wrong version (if you never or incorrectly restored it after you first unlocked the bootloader), or any other system partition (system, vendor, product, odm -- all which are contained in super.img thanks to Android 10) isn't stock. If it's boot or recovery or reserve you can fix. If it's anything else, your only option is to run the latest MSM tool to get back to stock (wiping all data in the process), followed by unlocking again, running the correct version of the tool to restore reserve.img, and go from there.
If you simply unlocked the bootloader and never read the thread about restoring your reserve partition, that's likely your problem since you already restored boot to stock. And an easy fix.
And I can't say this enough, BACK UP YOUR PERSIST PARTITION NOW! It's unique to your specific phone and SHOULD never ever be altered in any way. OTAs don't touch it. It won't prevent you from taking OTAs if you corrupt it, which is very likely on this phone sooner or later with the bootloader unlocked, but you will wind up with a broken fingerprint sensor/reader (which if you are lucky can be fixed yourself without RMA, but it's much, much easier just to make a backup to begin with).
Edit: The 10.0.39 version of the MSM tool came out, so you can use that to restore/update, but you'll lose all data in the process, and have to unlock the bootloader again and then restore/fix your reserve partition (so that future OTA updates will work) again.