There's two Gs in Changing :D
(Sorry!)

The st-link is male. Knock-offs come with female-female duponts.
Get a 4x1 pin header. Connect the duponts to the ST-Link, and, then, the 4x1 header. Place the 4x1 in the hole, then just push it left/right, so the pins make contact, diagonally, with the metal inside the hole, and just hold it.

Press it to the right, and hold.
Then run ST-Link Utility, load the .hex file, click Target-Connect, Target-Program&Verify.
Disconnect, remove the ST-Link.
Done.
Getting/updating the firmware, I can't help with! But, that's how you'd upload a new one :)
And/or debug one you're writing.

AH! So.
The 4 pins on the right, look like they're the SWD pins!
That's really good news. Means you can program using a (knock off/cheap) ST-Link
Pins are 3.3v on the top, SWDIO, SWCLK, And GND on the bottom.

Get a cheap ST-Link. Connect the 4 pins to a pin header. Push it into the 4 holes.

Yes, the STM32 can be bricked by a borked firmware, depending on the STM32, and, the method you use to upgrade it. (DFU is safer, Serial is riskier, because it can't be verified)

Check the datasheet, and schematics, and see which pin needs to be connected to 3.3v to enable DFU mode.

I've upgraded many firmwares in a similar fashion. (I normally solder on pinheaders, now. But, I used to use the DFU method before this.
(This is how I learned to solder, too, btw. Needed pin headers on a Gotek clone!)

You often hold down a button/jumper, to enable DFU, and then, you upload the firmware over usb, with the STM32 DFU loader.

The devs firmware has been released for the device. What are their instructions for upgrading?

Loooads of people hold the pins in place, rather than soldering, to program mcus

Which STM32 is it?

You can totally just push in 4x1 pinheader, connect the usb serial wires to that, then push them at an angle, for the few seconds it takes to upload the firmware.

That's probably required for uploading serially, to the STM32.
BUT, most STM32Fxx devices have DFU mode.

Not a phrase I expected Jeff Minter to shout at the internet :D

Fantastic!!! Now, two uses for my 10,000 days album 😍

Wow! That's amazing looking.
@savetz.bsky.social Have you seen this? :)

Which page!!

Famicom Data Recorder

Well then! you might be interested in: famicomdatarecorder.com

No no, you're right the first time. Be super hard on AI from now on :) It's just probability statistics.

George. Do better.
Remove this.

Have you played the rom hack where they converted it to the gameboy colour? As amazing as it is on the gameboy, it's not without its flaws (and slowdown). Super mario land 2 DX is *amazing*

That's probably a bit more than expected, I presume! 😝

Probably a good candidate for a 3d printed support! One that fits the entire length of the support pillar...

Almost finished (and programmed) my fujinet! Now, who has a 3D printer...

a group of knights are walking in a line with the words there must be war on the bottom ALT: a group of knights are walking in a line with the words there must be war on the bottom

Blasphemy!! It must be war!