hi all
I've been a long time ML user, but lately stumbled upon ML mention on the web and decided that I'll try new build with my T3i (aka D600) and ended up with unexpected problem.
Here are my steps:
1) dl-ed latest nightly
magiclantern-Nightly.2016Jun13.600D102.zip
Built on: 2016-06-12 20:59:14 -0400
Changeset: 90fe6de
2) formatted 4Gb card in the camera, made sure that the battery is fully charged
3) copied contents of the archive onto SD card on my laptop
4) put SD card back into camera, run firmware upgrade
5) ML installation screen appeared with green message about successful installation
6) I turned camera off, copied LOGS dir with ROMs onto my laptop, then put card back and turned camera on, it booted up into ML ok, I briefly checked settings once again - didn't change any settings except owner info string and shooting a picture for test
7) turned camera off, replaced SD card with another one (16Gb Transcend) - it is my main one, the card was previously formatted in the camera and had some pics on it, I removed it and reviewed photos on my laptop just a moment before. Tried to boot the camera...here the problem starts, 'cause

NOTHING HAPPENS

even red LED didn't blink... I pulled out battery and card, waited for a min, put back 1st SD with ML - it booted ok.
9) put back 2nd card - not a single sign of camera booting... battery trick again, 1st card, uninstalled ML via fw upgrade menu, turned camera off.
10) put back 2nd 16 gb card - red led lit up and after a few seconds (it looked like something was happening, took more time than usual) camera turned on, but card was not recognized. "Card cannot be accessed. Reinsert/change the card or format card with camera" message popped up.
I turned camera off, put card into laptop - but it can't recognize the card now too. Even on USB level no new devices appear when I plug it in

Now the 16Gb card is totally dead and to me it looks like that ML just killed my card somehow
Questions: any chance of reviving the card? Silly me didn't back up photos, never ever before I had an SD card died such out of a sudden ((( so any advice appreciated.
Any clues on what happened? Did the canon/modified bootloader when ML is installed look up parts of firmware on SD card and could it happen that it killed SD flash controller somehow?