I will preface this by saying that my day job is in IT, but it is a very long time ago indeed that I did anything close to programming or dissecting code. Also, I used to know my way around Unix - before Linux! - and I am not very strong in hardware.
This said, an immediate difference that I can see between the 2021.02.02 and 2021.03.06 images is that the 2021.03.06 contains a package labelled bcm4354_rootfs.tar.gz. Now the BCM4354 is a Broadcom chip containing Wi-Fi and Bluetooth, datasheet
here and note that this division of Broadcom was acquired by Cypress, hence the name in the link.
I have the competence but not yet the time to try to figure out if there is a different wireless device driver available in either of the images...
Question, probably to
@VLud and
@TireGuy6 who are working with images: is this driver significant? Could it make for a problem for hardware that contains a different wireless chip? Could this be blocking booting from USB? Or am I just barking up the wrong tree?
I am stubbornly maintaining that there is a solution to fix the problems of 2021.03.06.1343 for those affected, if we can just find it. I would also comment that there is not inherently anything wrong with products designed, built and sent from China (where do you think your iPhones come from?), whether you bought them from Apple or Aliexpress. I do agree that it is so far disappointing that
@CarlinKit has not responded recently.