david Kaplan 
A few questions please. I need to use the RS232 ttySAC0 channel for project control. 1) What are all the changes needed in order to switch the debug channel to ttySAC2 or an USB serial port? I changed the kernel using make menuconfig a) System -> (2) S3C Uart to use low level messages. b) Kernel Hacking -> (2) S3C Uart to use for low level debug The first time I changed only b) and nothing happened. The second time I added a) and now now debug seems to be output on ttySAC2 and the display is dead. I used the "Downloader Instructions" pdf information to update my board. Maybe there is another entry that I missed? Why would the display go dead? I evently am doing things correctly as with only b) the display was OK. 2)Is it possible to switch the debug output in user mode after startup or only by way of a kernel recompile. 3) Is it possible to update the kernel using only the USB and maybe the Ethernet channel and not the serial channel. On my first board I evidently damaged the RX line on ttySAC0. thanks