Originally posted by Marcuse Thanks for your comment paulh. The reason why I was wanting to update from v. 1.30 to 1.31 was because I had experienced problems with my a SanDisk 16GB Ultra SDHC card suddenly failing to save images when it must only have been about half full (I'd been saving as JPEGs rather than RAW). I then saw on the Ricoh firmware download page that v. 1.31 gives "Improved stability of recording image for some SDHC memory card", hence my deducing that v. 1.30 was no good for SDHC cards. So could my problem have been that the card that I was using was merely rather tired and worn out? Does this sort of thing happen?
Have you reformatted the card in-camera recently? Be sure to copy any images from the card beforehand, as they will be erased during reformatting. The card may be failing, but I would try to refresh the card with a reformat first.