Hi Micro,
Using Exer 02 to keep a copy of cald data is a good idea , the cal data is read from nvram location starting 1e00, so in theory can recreate, except there is probably a check sum of the data stored somewhere on the nvram, I am not sure where exactly where, there is no documentation on the checksum anywhere I have been able to find.
So if you are keen to copy the nvram, use the instructions, I previously mentioned in my post "NVRAM 2465 /2467 replacement". And you can get the data out. Desoldering the nvram to read is risky, because in these old nvram chips, the data gets corrupted easily by the desoldering process. After I had copied my nvram data out, I desoldered the nvram to replace it and found the contents in the old nvram corrupted by the desoldering.
cheers
Das
