Firmware 1.174 Update:

I just wanted to let you all know that I haven’t had any issues with Leica’s most recent firmware update for the M9 and M9-P.  So far, I’ve tried my M9 with a 32gb Lexar Pro, an 8gb Sandisk Ultra, an 8gb Transcend, and a 16gb Sandisk Extreme card, and no problems.  I didn’t have any issues with SD card compatibility before this firmware update, and after this update, things are still good with my M9 as expected.  If you own a a M9 or M9-P, and still haven’t downloaded it yet, you can find it here at the Leica website.