Since I didn't get any help, I flashed the phone. Then I could finally install U-boot pr13.

But it still doesn't work. I followed all the instructions for SHR, and when booting, the boot sequence always defaults to the maemo OS, not the SD card.

So I press some key to interrupt the default boot sequence and 'run mmcboot' and get this error:
So I tried the Ubuntu installation, with the custom kernel. No progress, I still get the same error.

How do I make it work? And how come I don't get any replies here? Am I being punished for having failed to read some instruction somewhere that I am supposed to look again and again over and over in some corner of this forum until I finally find it and solve it by myself instead of bothering other people with my problems?