PROBLESN WITH NO SD CARD READER AND TIME SIG +/+

AFTER THE UPGRADE TO 2.7, I HAD MANY PROBLEMS WITH LIKE THE SD CARD READER AND TIME + / +, I REVERT TO 2.04, MORE THAN AS EVEN AFTER I HAVE THE PROBLEMS.

Try downloading the 2.7 firmware again and reinstalling. Sometimes the download glitches and it causes what you are reporting.