apt-get install scratchbox-toolchain-arm-gcc3.3-glibc2.3
Get kernel-2.4.32
Apply patch.5mx
export PATH=/scratchbox/compilers/arm-gcc-3.3.4-glibc-2.3.2/bin/:$PATH
make mrproper
copy config.2.4.32 to .config
make oldconfig
select the correct keyboard for your psion
make dep
make Image
Serial port doesn't work - I'm not surprised. Poweron/off button also doesn't work - Don't know why