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awol
05-07-2006, 02:22 PM
hi,

can anyone tell me how to downgrade the firmware on a ntl 200 ambit modems.:please:

thanks

awol

d3putydawg
05-07-2006, 02:52 PM
have u msn mate i have write up

bhatti00
05-07-2006, 02:55 PM
^ stick write up here so other people can be informed also..

d3putydawg
05-07-2006, 03:05 PM
heres how to stop the ambit from disconnecting, it will however lock to the new firmware, but just follow the downgrade tut to get it back if you need to.

when in hyperterminal type this

cd non-vol
cd halif
mac_address 1 00:00:00:00:00:2c
write
mac_address 2 00:00:00:00:00:2c
write
mac_address 3 00:00:00:00:00:2c
write
mac_address 4 00:00:00:00:00:2c
write
mac_address 5 00:00:00:00:00:2c
write
mac_address 6 00:00:00:00:00:2c
write
mac_address 7 00:00:00:00:00:2c
write
mac_address 8 00:00:00:00:00:2c
write
usb_mac_address 00:00:00:00:00:2d
write
cd docsis_ctl
dload -ip 62.252.64.22 ntlhm200_ntl0001.cpr
cd non-vol\snmp
max_dload_tries 0
write
cd \

copy and paste above

make usb mac the same as your mac but the last digit 1 higher

heres how to stop the modem from disconnecting all the time

load dhcp force, sniff for macs. when you get a few note down the tftp server ip then do the following

cd docsis_ctl
dload -i1 11.111.111.111 ntlhm200_ntl0001.cpr

replace 11.111.111.111 with your tftp server ip

when its all finished your ambit shouls be as solid as a surfboard.

if you have already done the max_dload_tries 0, do the commands below then do the above.
also need softwear called SolarWinds tftp