Can you try to boot from sdcard and then attach your ssd and test it. Check if ssd drive is connected with uas enabled with lsusb -t ( Port 1: Dev 2, If 0, Class=Mass Storage, Driver=uas , 5000M ) Then try to read from it (it doesn't need to be mounted) sudo dd if=/dev/sda of=/dev/null bs=10M count...

Did you flashed the ssd directly from image ? Yes, I flashed it using balena etcher. Does the image boots from sdcard inserted into usb reader ? I did not burn the image on an sdcard. Does your ssd adapter controller support UAS ? Some USB-SATA controllers works perfectly fine on PC , but do not wo...

It does not work on my Pi 4 4 GB. It resizes the filesystem, reboots and gets stuck. Please see the screenshot. I updated the eeprom to Jul 16 2020 beforehand.