Cisco 7945 firware from 9 to 8.5.4

[bo liu]

hi

i want degrade my 7945 firware from 9 to 8.5.4

so i config a DHCP ,the option 150 to my computer,and my computer open a TFTP32 for TFTP server.

but the Phone can't degrade,it just down a term45.default.loads then stop .

i reset use 3491672850*# but now the phone is black screen...

i use SIP45.8-4-1S/SIP45.8-4-1SR2S and look at the TFTP,find it always download a term45.default.loads 

who can help me

[Terry Cheema]

Black screen means its unable to get files from your tftp, either unable to connect to TFTP or you dont have correct files in your tftp directory.

Make sure your phone has connectivity to TFTP. Check from logs if anythings shows up there. Also make sure you download the zip file from Cisco site and put all the files in there.

-Terry

[bo liu]

hi terry

the phone can connect to TFTP ,i can see the phone download  term45.default.loads form my TFTP server

i use the firmware cmterm-7945_7965-sip.8-4-1SR2.zip and cmterm-7945_7965-sip.8-4-1.zip

[bo liu]

next is my TFTP32 log

Connection received from 192.168.20.2 on port 50020 [05/02 05:45:44.595]
Read request for file <term45.default.loads>. Mode octet [05/02 05:45:44.595]
Using local port 49399 [05/02 05:45:44.610]
<term45.default.loads>: sent 2 blks, 648 bytes in 0 s. 0 blk resent [05/02 05:45:44.610]

[bo liu]

the attachment is my download firmware 

please remove .txt  

in it has a file XMLDefault.cnf.xml is my add in the attachment

dose the phone firmware version has some restrict?

[bo liu]

up

[KM4ATO]

I have same problem.
It can up firmware version 9 but can't downgrade version 8.