This is what I see during boot up of a fonera. I didn't touch any keys or send any commands to make this happen. This is exactly how it boots up if untouched

+PHY ID is 0022:5521
Ethernet eth0: MAC address 00:18:84:1f:8c:34
IP: 192.168.1.254/255.255.255.0, Gateway: 0.0.0.0
Default server: 0.0.0.0

RedBoot(tm) bootstrap and debug environment [ROMRAM]
Non-certified release, version v1.3.0 - built 16:57:58, Aug  7 2006

Copyright (C) 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.

Board: ap51
RAM: 0x80000000-0x81000000, [0x80040450-0x80fe1000] available
FLASH: 0xa8000000 - 0xa87f0000, 128 blocks of 0x00010000 bytes each.
== Executing boot script in 10.000 seconds - enter ^C to abort
RedBoot> fis load -l vmlinux.bin.l7
No image 'vmlinux.bin.l7' found
RedBoot> exec
Can't execute Linux - invalid entry address
RedBoot>