[sinphaltimus]

Here's my current situation.

I have twp PSPs. One is fat, the other is slim. Both are on 3.90 M33-3. The fat has 1.50 add-on. None of them have timemachine installed. I had my fat first and all my mem sticks have a base installation of 1.50 driven utilities and applications.

Originally, I wanted the fat for everything and the slim only for iso/cso and skype which is what i have now.

Here's my problem:
I am sharing Mem Sticks between them and really hate having to put my slim down when I realize I just tried to run some 1.50 only homebrew to go and get my fat to do the same thing.

I know all I have to do is install timemachine on my slim to resolve my problem. However, when initially going through the guide on a dry run, and then doing a dry run on the slim, I see options that concern me. One major concern is that I will need to install (or copy) all timemachine related files to all of my memsticks for all of them to work with the slim. Another is that it appears to change the memstick geometry in some way (convet) like a reformat or something.

So, here is my questions:

1. Will I need to install timemachine on my fat as well to retain my current usability with the mem sticks and contents of those mem sticks?
2. Are there any known issues with my goal of seamlessly sharing mem sticks and applications between my slim on timemachine and my fat not? What about both on timemachine?
3. What are my risks and recommended actions?

In closing - My slim outperforms my fat in Browsing, iso/cso/umd game performance. My fat has IR keyboard use for on-line chatting (Browsing, afkim and IRC). I will not choose one over the other. If there is a possiblity that memsticks should not be shared or my goal is unattainable, I would consider timemachine for the slim and dedicate appropriate aps/memsticks to it then I would simply keep the fat for all keyboard related aps, and music/internet radio player since I have a 3600mAh battery AND I happen to be from the 80s generation...

Goal Summary - To seamlessly share and run all applications on multiple memsticks between a fat PSP and a slim PSP where the mem sticks contain 1.50 homebrew as well as 3.90 homebrew.