I'm totally new at this, and searched for some help... but no luck.

I am trying to use the kernel_flasher to install the support for high speed MMC cards and fixes. I have my 770 in red-pill mode (not sure if that's necessary), have root access, and am trying to run "sh kernel_flash zImage-48MHz" from "media/mmc1/kernel_flasher".

I am getting a series of errors:
./xxd: Permision denied
expr: syntax error
expr: syntax error
expr: syntax error
expr: syntax error
This is not a valid kernel image, cowardly exiting.

Can someone point me in the right direction?

Thanks.