You might want to keep a multi image disk and will work on all BCM 50 and 450 versions.
I personally have that image and the original Nortel/ Avaya Acronis *.tib ones that I have used to rebuild systems.
As mentioned above, the Keycode function from release 5.0 onwards was changed in that there were two locations that stored the keycode file. Ones was on the hard disk and a new location was left in a folder on the Motherboard, which is referred to when the BCM boots up.
A number of us have ways to get round some of the problems with recovering / changing keycodes, but it is always worthwhile keeping a copy of them. Any backups you have will contain the keycode file.
My advice is to clone a copy of your existing BCM. It will mean powering it down to make a copy.
As your BCM's are both 450 systems, then an even better idea is to get keycode 241 enabled on your systems to allow raid to work. All you need to do is to get a couple of hard disks such as the Seagate 80 gig ones and have two mirrored hard disks in use.
I have attached a guide on this simple process and feel free to contact me if you need any more advice.
Firebird Scrambler
Nortel and Avaya Meridian 1 / Succession and BCM / Norstar Programmer
Very advance high level knowledge on the Linux BCM phone system.
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