How to update Sheevaplug SD kernel

[Heuer]

I have a multi boot Sheevaplug with the latest A1 revision processor. This needs 2.6.34 release kernel which is what is running in NAND. My application (Squeezeserver) is on a Transcend 4G SD card but that image has the 2.6.30 kernel and is causing all sorts of problems. How can I upgrade the kernel on the SD card without loosing the application? I have tried copying the kernel from the NAND but I am getting an 'out of space' message. I have spent most of the afternoon trying various methods and trawling the forum but to no avail.

Thanks

[birdman]

What do you mean by "the kernel on the SD card" and "the kernel from the NAND"?
You can only boot one kernel, and that is determined by your uboot environment settings.
So, which one do you boot from?
If you are booting from your SD card then an update is trivial - you just roll in the new /lib/modules files and update the boot file (uImage).
If you are still booting from  NAND the you'll need to update that version.