1.
configure your local computer ip to 192.168.0.100

2.
connect to the redboot bootloader by telnet on 192.168.0.1 and port 9000 just right now after you plugged in the power cord. consider that the timeslot is short for entering
the bootloader. you might need several tries

3.
enter the RedBoot console by pressing CTRL+C

4.
copy root.fs and vmlinux.bin.l7 to your tftp server directory

5.
configure the RedBoot bootloader IP and TFTP server settings using
ip_address -l [local ip address] -h [remote server address]

6.
flash the unit by entering the following commands

RedBoot> fis init
About to initialize [format] FLASH image system - continue (y/n)? y
*** Initialize FLASH Image System
... Erase from 0xa83e0000-0xa83f0000: .
... Program from 0x80ff0000-0x81000000 at 0xa83e0000: .

load -r -v -b 0x80041000 root.fs
Using default protocol (TFTP)
Raw file loaded 0x80041000-0x802e3fff, assumed entry at 0x80041000
RedBoot> fis create -b 0x80041000 -f 0xA8030000 -l 0x002C0000 -e 0x00000000 rootfs
... Erase from 0xa8030000-0xa82f0000: ............................................
... Program from 0x80041000-0x80301000 at 0xa8030000: ............................................
... Erase from 0xa83e0000-0xa83f0000: .
... Program from 0x80ff0000-0x81000000 at 0xa83e0000: .

RedBoot> load -r -v -b 0x80041000 vmlinux.bin.l7
Using default protocol (TFTP)
Raw file loaded 0x80041000-0x80120fff, assumed entry at 0x80041000

RedBoot> fis create -r 0x80041000 -e 0x80041000 vmlinux.bin.l7
... Erase from 0xa82f0000-0xa83d0000: ..............
... Program from 0x80041000-0x80121000 at 0xa82f0000: ..............
... Erase from 0xa83e0000-0xa83f0000: .
... Program from 0x80ff0000-0x81000000 at 0xa83e0000: .

RedBoot> fis create -f 0xA83D0000 -l 0x00010000 -n nvram
... Erase from 0xa83e0000-0xa83f0000: .
... Program from 0x80ff0000-0x81000000 at 0xa83e0000: .

fconfig
enter the bootscript: 
fis load -l vmlinux.bin.l7
exec

save the config and do

reset