Please provide v407 for anker soundcore 2

Hi there,
Could you please provide me the firmware version 047 for Soundcore 2, if you still have it? I updated my speaker to the newest version 053 and have experienced numerous issues. The buttons are behaving bizarrely and it disconnects after a few minutes or seconds of connectivity. I contacted Anker Support and they provided me with v039 to which the device has a different issue (the volume down button behaves like it’s being pressed constantly, and decreases the volume down to a zero). They couldn’t provide v047 and their reason was v047 is “cancelled”. I’d be grateful if anyone could provide me the firmware as I still believe the issue I have with my device is a firmware compatibility issue.