Latest system update changed my keyboard to black letters/white backround. Would like it back to white on black. And spell check has become unusable - it now never lists the correct spelling, but rather wildly different words. Most of the time I misstype one letter - usually with a letter adjacent on keyboard. When I touch word for drop down of suggested corrections, I sometimes get words that have NO letters in common with what I typed. Is anyone else having this problem? HOW DO I GO BACK TO PREVIOUS, WORKING VERSION?