OpenSprinkler › Forums › Hardware Questions › DIY Kit Assembly Questions › SOLVED! Firmware flash OK, but LCD displays rectangle box & stations not working › Reply To: SOLVED! Firmware flash OK, but LCD displays rectangle box & stations not working August 8, 2015 at 9:27 pm #39762 thisisitParticipant From what I found on internet, the default display mode is 1 row, that is why I see 1 row of black blocks. This means the LCD failed initialization. what could be wrong?
