By upper, do you mean pad closest to the joystick ports? That appears to be ground.
The one closest to the epoxy blob, appears to come FROM the epoxy blob, so you would have to scrape the trace.
ATARIAGE FOLLOWUP WITH FLASHBACK 2 ISSUES
Sorry for not having catched the response before. The flashback2 I have has silkscreen with a table of corresponding values and has pads with numbers in the back of circuit board to as a reference for the cartridge connections, but the soldering pads/points are in different positions from the ones I saw on photos here on the forum, maybe I have different circuit board revision (hopefully mine is now a fake one). The following is a photo of mine with some indication:
By upper pad I mean the soldering point pointed by a yellow line with a number 1 (pic above)., and I tested and there are indications that it may be a ground. The 1 and 2 marked numbered yellow lines ( added editing the image) are only to help visualize are equivalent to J3 on circuit board and they the ones I messed up and eroded the plated soldering point by overheating them, but I believe that I was able to scrape some of the mask of the circuit board trace and was able to solder it there (but not I am not 100% if I got the right trace).
Another object of confusion for me is the soldering point/pad 21, it is pointed on the pic above by a yellow line and the no. 3. In my circuit board the silkscreen no. 21 is surrounded by soldering points so it is not clear to which soldering point does the no. 21 refers to.
Thanks for any help