If you use a copper wire, you can take strands of it and wrap them arround the pico in that spot, I recommend either hot gluing on taping the exposed connection with scotch tape.
I get a blue LED when is dont have the battery jig in touch with the TP73 in PTB. UDPIH works but cant load Minute Menu, according to the guide I have a bad fw.img file. I do ptb and I still get the blue blinking button, this time the ptb and fw.img file didnt merge properly. Now I find out I...