Because I am trying to gather as much info as possible to upgrade the device, and since it seems to be scattered around the forum, I ask that much
I did so, I connected Pickit to GND and Pickit reset to the reset in the UNO, I connected as well Vdd from Pickit to the 3.3V in uno, otherwise the Pickit won't detect that signal and it won't allow flashing the device.
I reset the UNO using its ICSP connector GND and Vcc
It was powered with usb, I measured the pins and I had 3.3V
After doing all that, connecting TEST0 and TEST1 to the pickit, the device was not loaded at all. I only got Address: 300006 Expected Value: 80 Received Value: 0 error while trying to flash, of course, the flash was not carried out...