Providing that you have one of the OZTIVO emulator images then there is no need to do a full upgrade.
There have been a number of incremental fixes that have been introduced each of which can be performed manually (i..e files replaced or edited)
Ed did provide an update from RC1 to 1.2 however the 1.2 image in general was found to have a number of issues that were forcing TIVOs to lockup.
1.3 is the current version - however if you search the mailing archives you can find the changes between versions (i dont believe a diff file has been created) and implement these yourself
Craig
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