When I was refering the weak pull-ups I was refering the 'on-chip' pull-ups, but when I was saying that I didn't know if the ESP-12 had pull-ups inside the module shield, I was 'comparing' with another ESP module that I currently use from Olimex, that has 12k pull-ups in both the reset and enable pins, so when I use these modules I shouldn't include any additional pull up on my circuit. You can check it here (R13 and R14 are the pull-ups):
https://github.com/OLIMEX/ESP8266/blob/ ... ematic.pdf
Best regards
Fernando