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"ssl certificate expired" trying to install Micropython firmware

See original GitHub issue

I was following along with this video and tried to update my firmware using Thonny. When I clicked Install, my IDE attempts to download micropython but it fails with a “certificate expired” error.

To get around it for now, I just installed Micropython manually from the Raspberry Pi Pico Getting Started page. After launching Thonny, I was automatically connected and could run commands in the REPL and run programs using “Run current Script”, F5.

Is the SSL cert something I can fix on my end?

Issue Analytics

  • State:closed
  • Created 3 years ago
  • Comments:12 (4 by maintainers)

github_iconTop GitHub Comments

1reaction
aivarannamaacommented, Feb 16, 2021

That’s really strange. In my Windows 10 machine I can download it without problems. Can you download from this URL directly: https://micropython.org/resources/firmware/rp2-pico-20210202-v1.14.uf2 ?

0reactions
owardlawcommented, Apr 23, 2022

Ran into this issue on my windows 11 machine but works fine on my Macbook pro.

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