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Upgrading the TOS on a 6 chip system

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Hi all,

I'm trying to upgrade the TOS on my 520STFM from 1.02 to Rainbow TOS (1.06). The chip vendor is understandably a little vague on how to do it, is there HOWTOs available on how to do it?

It appears there are 6 chip (28 pin) versions of TOS 1.06, so should it be a case of a straight swap, or do I have to mod it for 2 chip?

Many thanks

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