Hoping someone can help. I have an EPSI and I bought some more of the exact same SD cards to replace mine which cracked.
I'm clueless when it comes to these things. I tried following the EPSI instructions but for some reason its still not working. I'm missing something here
and have been banging my head against the wall trying to figure it out. Any help from this awesome community would be Greatly appreciated..

Thanks in advance
Matt

I couldn't use any SDHC cards, I could only get a smaller one (512MB I think) to work because it seemed to take straight up SD cards and not SDHC so check on that and make sure.

I think TLTD is onto something. I just checked my card and it is a 512 mb SD card. Hope this does the trick for you.

from lodigy web site epsi user manual"

5.1. SD Card and File Format
The EPSi handles SD Cards formatted with either FAT16 or FAT32 file systems.
Inserting a card with a different format will trigger an error message. SDHC
Cards are currently not supported.
Impulse response files are 44.1 KHz Wave Files with either 16 or 24 bit depth.
Trying to load files that do not match this specification will trigger an error
message

Do you use Mac or Windows?

PC

I once formatted an SD card in Mac, and load the firmware onto it. The Epsi couldn't load that firmware. I had to find a windows machine and format the card again to make it work on the EPSI

on a mac in disk utility you have to select the type of partition ie: fat , fat32... ect.. then it should work in the EPSI

I have windows 7. I've got it to the point where the card reads C.01. I've been trying to drag and drop the cab impulses after renaming 100, 101, 102 into a folder I made named EPDA and for some reason its not seeing these.

This might help on some stuff I made it a few years back

http://www.elevenrackpresets.com/forum/ubbthreads.php?ubb=showflat&Number=42322&page=1

This MUST BE Followed to a T or it won't work...

5. Managing Impulse Response Files
5.1. SD Card and File Format
The EPSi handles SD Cards formatted with either FAT16 or FAT32 file systems.
Inserting a card with a different format will trigger an error message. SDHC
Cards are currently not supported.
Impulse response files are 44.1 KHz Wave Files with either 16 or 24 bit depth.
Trying to load files that do not match this specification will trigger an error
message.
5.2. EPSi “EPDA” Folder
The Epsi looks for files in a specific folder on the root directory of the SD Card
called “EPDA”. If that folder does not exist, the EPSi reports an error. All files to be used by the EPSi should be included in that folder. The EPSi ignores all
subfolders in “EPDA”.
5.3. File Naming Convention
The EPSi differentiates impulse response files by looking for a 3 digit indexing
prefix in the file name. When an SD Card is inserted, the EPSi searches for all
files having that prefix and the .WAV extension and then creates a sorted list that
can be scrolled through as the first parameter (1.Sd). The EPSi only looks for 3
digits at the beginning of the file name. The rest of the file name is ignored.
Note: If two Wave files have the same 3 digit prefix, the EPSi lists only one of
them - picking the one somewhat randomly.
On a computer a file name might look like this:
123 impulse response name.wav
The EPSi shows the file as:
"123"
Note: The indexing prefixes in a list of files do not need to be contiguous. The
EPSi only displays any combination of the 1000 available (000 to 999) that
actually exists in the EPDA folder.