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OPK (Open PacKage) files are archive files that contains emulators, standalone games, applications or utilities along with all their associated resources like icons packed into a single file that does not require installation to be able to run them.
!!! Note
In the current (2.0.0) release of the FunKey-OS, the **OPK** files are only available for the gmenu2x launcher, and not in RetroFE.
7-Zip can be used to extract OPK files, and Open Package Creator (v1.1.2) is a useful tool if you want to re-package an OPK or customize icons, add additional games and much more.
Connect your FunKey S console to your computer and add OPK files as simply as you would do it with a simple USB memory stick:
| Display | Action |
|---|---|
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Connect the FunKey S to your computer using the provided micro USB cable, then open it to turn it on |
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At the launcher's main screen (example here with gmenu2x), press the MENU key |
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Press the UP/DOWN keys until you see "MOUNT USB" |
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Press the A key twice to confirm |
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"EJECT USB" is now displayed instead, now go to your host computer and open a File Explorer window |
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You should see the FunKey S appear as an USB drive on your computer in the File Explorer (example here with Windows 10) |
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Drag & drop the OPK file into any 1st-level folder1 in this USB drive on your computer and they will be automatically available on the FunKey S |
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Eject cleanly the USB drive from your computer |
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Back on the FunKey S, at the "EJECT USB" menu entry, press the "A" key twice to confirm |
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Press the MENU key to return to the launcher screen |
Of course, you can remove OPK files from the FunKey S console as you would do with a USB memory stick, too!
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You can create additional 1st-level folders in order to organize your OPK files just like you want. ↩︎








