i recorded most of these sounds, except for the startup which i found it in the Coolsand source code audio This device is basically the YSE Bluetooth Speaker with a different casing. I couldn't find much information about both of them tho apart from the fact that they exist. The startup tone of this is also found on other devices! (mostly coolsand SoC phones and other cheap bluetooth speakers, like this one, and is one of the ringtones in the Nokia 105 (2013) as well!)
