battery bugs lurking inside your Lumia 800's beautiful shell? For some of you, today's your lucky day, as Espoo's just released a fresh batch of bits, which bring "significant improvements in battery performance and power management." We've seen version 1600.2487.8107 make the rounds once before, but previously when it was a Vodafone-branded variant -- which you may recall WPCentral discovered was responsible for an impressive 3x improvement (!) in battery life. Enhancements to audio are present in the build as well, with the company tweaking bass for "better voice quality" and your music enjoyment. Those ready to update should peep the Zune desktop software, although Nokia cautions not everyone will will get updated today, as coordinating across multiple carriers in different markets is like "herding sheep," resulting in a multi-stage rollout in the coming four weeks. More details, including a video on how to update, await at the source.