Hello, I'm testing an Open-RD Ultimate system with a Debian Squeeze system (boot with SD card), and I don't know well ARM systems. I found how to upgrade kernel (using flash_kernel), but I wonder how to handle a possible problem with one kernel (when upgrading for example), as there is no kernel boot selection : how can we manage a [updated] kernel refusing to boot, as we can't boot a failsafe one ? Thanks for your tips, Fred.