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flip
Senior Member

Joined: 18/07/2016
Location: Australia
Posts: 127

Posted: 08:59am 21 Sep 2026

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Hi all,
I suspect this is nothing to do with the latest release, but would appreciate any ideas.

I seem to have bricked my Silicon Chip HDMIUSBI2S (Pico2) board after trying the latest PicoMiteHDMIUSBV6.03.02b12.uf2 loaded just now. First time I've tried upgrading since having PicoMiteHDMI MMBasic USB RP2350B Edition V6.03.01 running great for a fair while.

I have tried Clear_Flash_RP2350.uf2 then b12 again, but still no response - tried a couple of times. Even going back to earlier working V6.03.01 version is the same, i.e.: No response from console connection - and yes, after each time I am switching the enable DIL switches on as well as the power switch on when running off USB-C console (and vice versa when programming)

I notice the clear_flash (when completes it's job) shows the RP2350 folder again so assume this conveniently allows to instantly overload the device with the a working uf2 without going to another manual boot cycle.(but may try cycling that as well)

I suspect something's got damaged (but I could be missing something obvious)

Regards Phil

flip
Senior Member

Joined: 18/07/2016
Location: Australia
Posts: 127

Posted: 09:20am 21 Sep 2026

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well it's me - looking closely - I somehow managed to set up GFXTerm for 1152000 baud, there was no response -i hadn't thought of that since the wrong baud usually gives gibberish, but I only got silence.
once changed to 115200 it was fine.

Sorry to waste time but you never know it may help someone with same tunnel vision as me :)

Regards Phil

matherp
Guru

Joined: 11/12/2012
Location: United Kingdom
Posts: 11891

Posted: 09:23am 21 Sep 2026

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How long is clear flash taking to come back? If you are using the correct version it should be a minute or more.
Using teraterm or similar, have you run OPTION RESET HDMIUSBI2S
This configures the board, You won't get anything on the display until you do it

flip
Senior Member

Joined: 18/07/2016
Location: Australia
Posts: 127

Posted: 09:36am 21 Sep 2026

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Thanks Peter!
Yes it took a minute or so for clear_flash.uf2.
And thanks for the pointer on OPTION RESET (I was thinking OPTION PLATFORM, but now I remember that's just a string with no functionality)

All going great on 6.03.02b12

Thanks & Regards Phil

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