Same issue here, device is frozen (albeit if you touch it, it's hot as hell:P) when downloading not-so-large sets of tiles (it happened few days ago when downloading tiles close to a route ~50km long, the overall download size was 60-90 mb, can't remember exactly now). I have swap on SD (was downloading tiles to eMMC so no read-write conflict) and the device doesn't reboot when doing heavy stuff with ED. Estel, do you also seem to have thumb? I'm on cssu stable on this device. I'll have to download another ~50km long route next week, I'll reswap (using your ereswap tool btw) before using modrana, then download tiles and use ereswap again (maybe modrana is using so much ram that it gets swapped to hell - then I should get the message that we are >9k over swap borderline and reswapping is needed), I'll post results then (although I doubt that 80mb of tiles could fill my 768 swap completely more than once, but you can never be sure unless you check).