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Firmware 3.9.1 Blocks on LCD  

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Nealz
(@nealz)
Eminent Member
Firmware 3.9.1 Blocks on LCD

I just did a Firmware upgrade to 3.9.1. Printer was was working fine except for Octoprint emergence stop error (Temp to Low). So I updated to 3.9.1. Now on my LCD I am seeing square blocks were the characters should be. See attached. Does. anyone have a suggestion what the issue could be?

This topic was modified 2 years ago 3 times by Nealz
Posted : 21/10/2020 10:41 pm
Nealz
(@nealz)
Eminent Member
Topic starter answered:
RE: Firmware 3.9.1 Blocks on LCD

I went though the troubleshooting guide and it mentioned the squares would come up if I loaded the wrong firmware for my model. I selected

V3.9.1 MK3S (September 21, 2020)

I do not have the MMU. Isn't this prusa3d_fw_MK3S_3_9_1_3518.hex the correct one for a Prusa I3 MKS?

This post was modified 2 years ago by Nealz
Posted : 21/10/2020 10:56 pm
Nealz
(@nealz)
Eminent Member
Topic starter answered:
RE: Firmware 3.9.1 Blocks on LCD

I reflashed the Prusa and now it is working.

😀

Moral of the Story... Read the Troubleshooting Guide!

Posted : 21/10/2020 11:07 pm
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