Update bit by bit - can we?

[schettj]

OK - so there is a topic on how to update the extended rom
There are two choices for the OS (2.2 or 3.3) rom
And, there is the prl/pri updater method via PPST

The only other firmware that can be updated appears to be "Radio" - and since I've been doing my updates piecemeal, I am stuck with what appears to be an "old" radio firmware version 1.12.0

Here's where I am after AKU3,3 + the PPST 20225 mojo:

ROM: 2.11.20 wwe
radio: 1.12.00
PRL: 20225
PRI: 1.19_003

So, question is, can I update Radio somehow without having to hard reset/install the OS/Extended etc....