Installing SuperBoot from Vivi

Hello,

I've recently bought some boards with W35B screens which came with
SuperBoot. I used a SD Card to install super vivi into the NOR. Now, I want
to revert the operation so that the board is as new. Is there a way to do
that ?

Thanks

Note that the boards are mini2440

I succeded to flash back SuperBoot by using the HJtag shipped with the
mini2440 and installing HJTAG (in the DVD coming with the boards).
Then, I could flash "SuperBoot.bin" (also on the DVD).