You cannot use a memory card of more than 2GB, and it MUST be a 2GB SD, NOT SDHC card. These are still available, but require a bit of looking, and you will want to assure that it is NOT a SDHC before you buy it.
OK - let' s work from your backup for a moment. If we can get your backup working, we can start your process over correctly.
In that Backup01 folder, there may be another folder... but in any case, you are looking for one that contains a a number of folders (including your old map folder) and quite a few files, including that one called ttsystem.
You don't say how you formatted your card before, but do so again using FAT32 and NOT the Quick Format option.
Once your card if formatted, copy all of the folders/files you found in your backup directly to your formatted card. Disconnect your card/unit properly (you don't say if you are using a card reader or doing this directly on the device) and shut down and restart your unit.
Does it boot normally and function normally after that?