Have you sorted out your problem yet ?
If not, have you tried restoring the original factory firmware, NO compiling needed.
Here is a video of exactly what to do.
Impossible to know waht you have already done to the firmware, but if the above fails, remove the SD card, reformat it and copy the .bin file across again, if that still does not work, repeat this line but then once copied across, rename the .bin file to something totally different as sometimes the ender will not update if it thinks its the same file as it already has, even if seemingly bricked.