Hi,
I recently bought a second hand S61 MK1 keyboard (as an addition to my MK2) and noticed a strange issue with the light guide. I tested the unit after the purchase and it was working perfectly and it's been sitting inside the original package - until I set it up again few days ago. Now it seems that the (almost entire) upper half of the light guide is fixed solid with light blue color and it stays static - no matter what you do. It doesn't respond to key presses (like it normally should and how the lower half does) and even the startup "rainbow thingie" doesn't show up in this area of the keyboard. The same applies to the keyboard color settings and layout splits - the changes don't apply to this "frozen" upper-half.
Otherwise the keyboard is working just fine, it's just the "fixed state" light guide on the upper half of the keyboard that is annoying me. I tried to update the firmware but the tool says it's already at the latest version.
Does anyone have a solution to this probelm? ...or is it possible to do a "factory reset" type of procedure to this thing and then try to update the firmware again?