(adsbygoogle = window.adsbygoogle || []).push({}); First off, i only tested this on RDR 5th save. this allows you to get rid of the "Data corrupted error".

Required
3.55 CFW
OFW PS3
USB Flash Drive
A Save resigning program (You must login or register to view this content.) Credit goes there

1. Basically, after resigning your save and you get this error, you can do this in FileZilla.
2. on your 3.55 CFW, Start up blackb0x.
3. on your PC, have your desired save ready.
4. Browse all the way to savedata (devhdd0 - home - "USER" - savedata. not sure of the exact place but look for it.
5. Copy/Paste your save right into the savedata file, if done correctly. you will get your save on the PS3.
6. Data transfer to your OFW PS3. or test your save. i tried this with Red Dead Redemption MP Save. works perfect.

Have fun.
My first Tutorial, hope its useful.

EDIT:
Requesting to change the thread title to "How to Copy over your modded saves"

title says "no xploder" and you still need to resign your gamesave and why would you dt just for a game save?

No xploder, i meant that this is for people who arent using exploder but getting the error, i dont have xploder so i'm not sure if this can happen for them.

you can do this while doing your normal mod transfers. which either gives you mods or trophies.