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I have an Ender 3 Pro 4.2.7 2.0.8.2 that I haven't used for a couple of months; switched it on, all perfect. I tried to print a model and the PLA wouldn't stick to the bed; I think the hotend was a fraction high.

Re-adjusted bed to ensure square and flat as hadn't been used. Switched off and then hotend defaulted to 5 mm above table. Thought I'd do a firmware update, load the latest software put, it on a clean, formatted (4096) SD card, switch off power put the card in, and switch it on, just booted up as normal, ignoring the firmware update.

I followed all instructions from the web including a new card, renaming the file, etc. Switched off, switched on. now when I try to do Auto Home or Level Bed, nothing happens, no beeps no movement, and a minute later get "Homing failed printer halted please reset". Check all connections, put a meter on all micro switches, and perfect.

Nothing now moves and don't know what to do.

agarza
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Laserman_UK
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1 Answers1

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Check if the firmware is for the board version of your printer. Different boards may have different drivers or pin definition, which happens for example, when you flash a 4.2.2 firmware on a 4.2.7 board and vice versa.

Miguel Risco-Castillo
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