You need RetroArch 1.17 or higher with the latest gpSP core. As of this writing, Koriki is the only custom OS with RetroArch 1.18 and the gpSP core with the wireless GBA adapter emulation.
This is thanks to David GF who is the maintainer of gpSP and the creator of the GBA wireless adapter emulation.
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Resources
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►Koriki:
►7-Zip:
►guiformat:
►Onion OS 4.4 Features:
►Written Guide:
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Sources
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►David’s Breakdown on Blog:
►David’s Demo:
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Installing Koriki
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– Go download the latest full version (Koriki_OS_v1.4.2_full.zip as of this writing).
– Extract the contents using 7-Zip.
– Format the microSD card…