D0, D1 not working

[Moors7]

Could you try upgrading your system firmware to 0.4.3, that might help?
More information, and a link to instructions can be found here:

0.4.3 Firmware Release for Photon/P1

The firmware team are pleased to inform you that the latest system firmware for the photon (0.4.3) is available from the firmware repository’s releases page. If you are experiencing WiFi connection problems, or other unexpected behavior we recommend updating to this release. These are the changes since the previous 0.4.2 release: FEATURES Half-duplex mode on Serial1 via Serial1.halfdupliex(). Thanks to @prices. WiFi.connect(WIFI_CONNECT_SKIP_LISTEN) allows application firmware to skip liste…