Heads Up :
The post you are writing will appear in a public forum. Please ensure all content is appropriate for public consumption. Review the employee guidelines for the community here.
I'm currently planning a 6.3 to 7 software upgrade for two pairs of PIX 525 FO - I've worked my way through most of the the online documentation, but am still pleased to read about other people saying it was painless. Will post here once completed.