Really new to firmware flashing on the Picocalc and waiting for it, i wonder how :
- Flashing a uf2 file to a pico1
- Flashing a uf2 file to a pico2w (i got one to replace the pico1)
Thanks ! 
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It’s super easy. Push the button on the pico (you can see it through the casing slots) and keep it down as you connect a USB cable from its socket (not the USB C one) to your computer. The Pico will appear as a removable drive. Drag the .uf2 file to this drive. That’s it!
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I hope i can get this picosytem working on pico calc or 32blit
It should be possible if someone takes a look.
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Super easy, thanks a lot !
Is there a lua firmware image available for this device?
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Thats amazing thanks!
Hm. When I press down & hold that white button on the Raspberry Pi 2W I installed in my PicoCalc (arrived yesterday) and then connect it via its Mini USB port to my Mac computer nothing happens.
No drive in Finder and not even a new serial device as /dev/tty* 
I tried in two ways:
- just the Pico 2W connected to USB and main power of the PicoCalc turned off
- just the Pico 2W connected to USB and main power of the PicoCalc turned on
No difference.
Should I connect the USB-C port to my Mac, too?
Do I need any special serial drivers on the Mac (running macOS 15.5)?
Also, which format should the SD card be formatted in? FAT32?
The Pico is a usb drive when in bootsel mode, not a serial device.
If it’s not showing any usb devices at all when plugged in, use a different cable. Chances are the one you are using is power only.
After you have connected the micro USB port on your Pico 2 W (not the USB-C port on your PicoCalc) to your Mac while depressing the BOOTSEL button, a USB Mass Storage device should appear on your Mac that you can mount and then copy a UF2 file to, which will be immediately flashed onto your board and booted into.