Before the KitKat 4.4.2 update I could use my MicroUSB cable to send and receive data to the Note. After installing the update I could only connect it to my PC extremely sporadically. I've had to sit by the port and plug-in pull-out the cable until it finally got recognized by my computer. Of course at the time I didn't know of the SD Card fix and every time I've tried since then doesn't work. Yes, I have Developer options and the USB connection options checked.
I know people have been having problems with the SD Card but each person was still able to flash their Notes because they could send and receive data to install the fix. I can't even get to that point and everything I've read has been super broken up and sporadic so any help would be greatly and sincerely appreciated.