This rewrite of the O2 Harware Reference Guide includes the instructions for upgrading the O2 CPU module.
The following CPU modules upgrades are discussed in this guide:
RM7000 (from an R5000)
R12000 (from an R10000)
Chapter 5, “Ordering, Removing, Upgrading, Installing Replacement Parts” includes the following changes:
Instructions for upgrading the R5000 CPU module with the RM7000 CPU module
Iinstructions for upgrading the R10000 CPU module with the R12000 CPU module.