Hi,
If someone is interested here's the steps I have followed to successfully install Kamikaze 7.09 on Fon 2200 once obtained the redboot access.
Davide
RedBoot> fis init -f
... wait a few seconds ......
RedBoot> load -r -b %{FREEMEMLO} openwrt-atheros-2.6-vmlinux.lzma
...wait for a few seconds and ignore all the error messages...
/home/alfa/Atheros_Beta5.0/linuxsrc/src/redboot_fon1/ecos/packages/devs/eth/mips/ar531x/current/src/ae531xecos.c#393:ae531x_send AHB ERROR status_4 = 00000145
/home/alfa/Atheros_Beta5.0/linuxsrc/src/redboot_fon1/ecos/packages/devs/eth/mips/ar531x/current/src/ae531xecos.c#390:ae531x_send AHB ERROR: AR531X_DEBUG_ERROR = 00000145
...a lot of lines ....
/home/alfa/Atheros_Beta5.0/linuxsrc/src/redboot_fon1/ecos/packages/devs/eth/mips/ar531x/current/src/ae531xecos.c#393:ae531x_send AHB ERROR status_4 = 00000145
/home/alfa/Atheros_Beta5.0/linuxsrc/src/redboot_fon1/ecos/packages/devs/eth/mips/ar531x/current/src/ae531xecos.c#390:ae531x_send AHB ERROR: AR531X_DEBUG_ERROR = 00000145
RedBoot> fis create -e 0x80041000 -r 0x80041000 vmlinux.bin.l7
...wait for a few minutes and ignore all the error messages...
/home/alfa/Atheros_Beta5.0/linuxsrc/src/redboot_fon1/ecos/packages/devs/eth/mips/ar531x/current/src/ae531xecos.c#393:ae531x_send AHB ERROR status_4 = 00000145
/home/alfa/Atheros_Beta5.0/linuxsrc/src/redboot_fon1/ecos/packages/devs/eth/mips/ar531x/current/src/ae531xecos.c#390:ae531x_send AHB ERROR: AR531X_DEBUG_ERROR = 00000145
...a lot of lines ....
/home/alfa/Atheros_Beta5.0/linuxsrc/src/redboot_fon1/ecos/packages/devs/eth/mips/ar531x/current/src/ae531xecos.c#393:ae531x_send AHB ERROR status_4 = 00000145
/home/alfa/Atheros_Beta5.0/linuxsrc/src/redboot_fon1/ecos/packages/devs/eth/mips/ar531x/current/src/ae531xecos.c#390:ae531x_send AHB ERROR: AR531X_DEBUG_ERROR = 00000145
RedBoot> fis free
0xA80F0000 .. 0xA87E0000
RedBoot> load -r -b %{FREEMEMLO} openwrt-atheros-2.6-root.squashfs
... wait a few seconds ......
RedBoot> fis create -l 0xLENGTH rootfs
...wait for a lot of minutes and ignore all the error messages...
/home/alfa/Atheros_Beta5.0/linuxsrc/src/redboot_fon1/ecos/packages/devs/eth/mips/ar531x/current/src/ae531xecos.c#393:ae531x_send AHB ERROR status_4 = 00000145
/home/alfa/Atheros_Beta5.0/linuxsrc/src/redboot_fon1/ecos/packages/devs/eth/mips/ar531x/current/src/ae531xecos.c#390:ae531x_send AHB ERROR: AR531X_DEBUG_ERROR = 00000145
...a lot of lines ....
/home/alfa/Atheros_Beta5.0/linuxsrc/src/redboot_fon1/ecos/packages/devs/eth/mips/ar531x/current/src/ae531xecos.c#393:ae531x_send AHB ERROR status_4 = 00000145
/home/alfa/Atheros_Beta5.0/linuxsrc/src/redboot_fon1/ecos/packages/devs/eth/mips/ar531x/current/src/ae531xecos.c#390:ae531x_send AHB ERROR: AR531X_DEBUG_ERROR = 00000145
RedBoot> fconfig -l -n
boot_script: true
boot_script_data:
.. fis load -l vmlinux.bin.l7
.. exec
boot_script_timeout: 2
bootp: false
bootp_my_gateway_ip: 0.0.0.0
bootp_my_ip: 192.168.1.1
bootp_my_ip_mask: 0.0.0.0
bootp_server_ip: 192.168.1.254
console_baud_rate: 9600
gdb_port: 9000
info_console_force: false
net_debug: false