Is my FC rubbish now? In most cases, no. Watch out the following pictures, they show where to solder a wire to make the FC flashable again.

H8 mini green:

For H8 mini green an H101/H8s you can find a few more pictures including a short how-to here , introduced by RCGroups User ltwvince

Pic showing CLK and DATA pins for H8 mini blue FC: