hello， yes , you can find reference video via https://www.geeetech.com/download.html?download_id=33
yes , if you use 3d touch on A10 A20 series printer , need update firmware that support 3d touch . you can find the firmware also via above download link on our website .
pls check which control board does your A20M has , if it is V4.0 board , pls download A20M_G05(CH340 Support 3Dtouch) .
if it is V4.1B board , pls download A20M_3DTouch_hw4.1_fw2.2(ONLY for GT2560 V4.1 series motherboard)
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