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Clean install that bad boi (those 4a were done really well), update everything possible and then turn off as much settings/features as possible. It’s like reviving a 7 year old PC with Ubuntu 24.04.1(coming from an emotional standpoint than logical),the thing is badass again. It’s a great offline device. Meshtastic, music player, eReader, remote, (use local non-two-way VPN) GPS, etc etc. to keep that device living longer for another 7-10 years, buy a replacement battery sooner than later.
Turn the volume down, it’s going to hurt your ears.