Just sharing my experience in case it helps anybody.
I had downloaded the files a a few(?) weeks ago and I had Talk& Text version 1.0 on my computer.
When I entered fastboot flash super super.bin
, the initial response was "Invalid sparse file format at header magic".
It then continued and seemed to write super successfully.
Then I restarted, but it's stuck on the loading screen (Version 1.0). After a couple of minutes, the screen went back to a red "TCL" (maybe it restarted?) and then went to an Android Recovery screen, stating:
Android Recovery
Use navigation/power keys
Can't load Android
system. Your data may be
corrupt. If you continue
to get this message, you
may need to perform a
factory data reset and
erase all user data
stored on this device.
Try again
Factory data reset
I first selected the hard reset option, then the same thing happened, so I selected "try again", but it keeps happening.
I then tried to flash 1.1 but the first two times, I got the following message in terminal in the middle of writing super (both at different stages):
FAILED (Status read failed (Too many links))
fastboot: error: Command failed
The second time I noticed that it happened when I moved my laptop. I figured I might be a loose connection causing this issue, so I decided to start it again and stay away from the laptop the until it's finished. (I didn't use the [Login to see the link] recovery.bin.)
The third time it worked fine.