v2.7.1

Fixes

• Frozen artwork fixed. The server now resolves the running game from the OSD's own launch signals, corroborated against an actual core load, instead of trusting /tmp tracker state — which anything on the MiSTer can rewrite. Guards cover system folders, stale mirrors and folder displacement, so a mirrored path can no longer pin the display to the previous game.
• Screenshot capture stays responsive during artwork downloads (Tab5 and both 2.8" boards): the HTTP screenshot server is pumped through long transfers instead of timing out.
• mix tokens reach the right API. mix1 and mix2 in the media-order keys now map to ScreenScraper's mixrbv1/mixrbv2; plain mix keeps working as an alias of mix2.

New

• Version check on screen. The server exposes its version in the snapshot and at /status/version; the firmware shows both versions in the HUD and turns the panel red while they differ. One half updated without the other now announces itself instead of failing silently — and an older server that sends no version keeps the display quiet rather than crying wolf.
• flip_display — new [ui] key on all five boards that rotates the panel and the touch layer 180° for cases that hold the board upside down (microSD slot at the bottom, for example). Landscape only, off by default.
• Three more systems resolve — Apple Macintosh LC, Nintendo Virtual Boy and the PCXT core's EGA variant now map to their ScreenScraper systems, both on the server and in the firmware's own fallback leg.
• Core coverage keeps auditing itself — the weekly bot's CONF_STR mapping proposal was merged with proper display names, and the memtest variants, 3DO and the Paprium/VGMDrive rbf aliases are triaged in known_cores.json.

Notes

• Update both halves as usual: firmware from the web flasher, server through Update All / Downloader. If the version panel turns red afterwards, one of the two did not update — that is the new check doing its job.