Hector Martin

And I assume that the SBR that you're flashing looks different in hexdump. That looks like it isn't getting flashed properly... What you have on there is blank and you're just getting defaults.

yes, what I flashed is just the built version of your provided 9211 file now, and when I run hexdump on that there is much more output in hex, not empty lines

Oh yeah, make sure you always run 'halt' before readabr/writesbr. Having running firmware during those operations can screw up the process. Anyway if this doesn't work, maybe your SBR is write protected somehow? What physical card model is it?

If you can't get writesbr to work then something interesting is going on... Unfortunately there isn't much else I ca think of that I could ask you to try. I'd have see the card myself :/

I can give you ash access to this if you wish :)

I can give it a shot. Not now though, need to sleep. Maybe in a couple of days? :)