@leon-gurevich , thanks for the detailed log.
The log shows the processor, memory and USB link are working, since the board loads and runs the Firehose programmer. The failure is the step after that: the programmer cannot open the UFS storage at all (LUN 0, error 3), so nothing is written. The flat build only writes partitions and cannot reconfigure the storage chip, so repeating the flash will give the same result. The "Can't decode attribute slot" line is a debug message and not the cause.
You're right about the green message, the web UI reports success even when the flash fails. Thanks for flagging it. The log ending in "Flash flat build failed" is the real result. We've updated the guide to say so: https://docs.modalai.com/voxl2-unbricking/#if-the-flash-fails-to-open-ufs
This needs an RMA. Please contact us at https://www.modalai.com/pages/contact-us with the serial number from the board label and your QDL log, and reference this thread.
L
