One of my favorite retro-computing devices of 2019 was THEC64 mini. I love that it was a mini recreation of the Commodore 64 that not only looked like the original, but when plugged into an HDMI monitor, would also play Commodore 64 games built-in or on a USB drive. Upon release though, there were limitations:
- The 64 includes some not-so-great games.
- While you can load your own games, you couldn’t have more than one on a USB drive.
- The tiny keyboard isn’t functional.
- The UI includes a cumbersome virtual keyboard (not great for adventure games).
- The joystick includes a few buttons to emulate keyboard controls; however, that too is a cumbersome process.

Luckily RetroBiz does include an easy firmware upgrade; and while it won’t add a physical keyboard, updates can fix many of the other limitations. Before I write about the firmware upgrade process, please take a look at the retroCombs FAST LOAD (around 5 minutes) below.
YouTube Video: FAST LOAD: Upgrade THEC64 mini firmware (v.1.4.2)
In the video below, I demonstrate how to upgrade the firmware on THEC64mini and demonstrate what I get for my efforts:
YouTube Video: _FAST LOAD: Upgrade THEC64 mini firmware (v.1.4.2)
Download THEVIC20/C64 Firmware 1.4.2
As of 2021-01-20, the most recent firmware has been pulled down from the Retro Games website. Several viewers and readers have asked me if I could provide. I will post here until someone tells me I need to take it down. This is done as a public service to owners of THEC64, THEVIC20, and THEC64 mini until the 2020 Christmas release is online.
Download theC64-1_4_2.bin firmware
Process Overview
Now that you’ve seen the video, below is an overview of the steps:
NOTE: The process below also works for the THEC64 (maxi) and THEVIC20.
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Power down THEC64 mini.
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Download the latest firmware, in this case v1.4.2, to a FAT32 formatted USB drive.
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Plug the USB drive into THEC64 mini.
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Power on THEC64 mini.
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Using the Joystick, navigate to Device Settings (the wrench icon).
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Select System information.
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The current THEC64 mini firmware will recognize the new firmware on the USB drive with the following:
Firmware update found: theC64-1_4_2.bin Do you wish to uppgrade this firmware? Close Apply -
Choose Apply and the upgrade screen (images of a USB drive, status bar, and mini) will appear. Once the upgrade is complete, THEC64 mini will reboot with the new firmware.
That’s all there is to it!
What’s next?
I have another
Anyone else enjoying THEC64 mini, maxi, or THEVIC-20](https://amzn.to/3pjwVk2)? Let me know by leaving a comment. I would also love to read your tips and tricks for getting the most out of these little Commodore recreations.
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