@Matt Bartlett did post about the risks of updating with the sd card still inserted - can lead to some of the files being accidently saved to the card, instead of to the main memory.
Matt also posted once about some sd cards being susceptible to overheating if many files were transferred at the same time, causing the card to fail.
Maybe you have ended up with a corrupted update, with some files overwriting your sd card index, causing your poly to spend all night trying to rebuild the music file index, and gradually draining your battery.
Best to email
support@chordelectronics.co.uk and see if Mitch can help.
Thats the thing though Mike, I didn't update poly, it did it itself and I was unaware of it. Poly and mojo were stuck on charge about 2 weeks ago after I had finished using it, once fully charged I removed the cable and poly sat for a few weeks, turned off until yesterday, whilst turned off, the battery still got drained ?
Remember I told you in a pm that I was very happy with 2.0 and you told me that 2.03 was only for people who had problems updating to 2.0, and I told you that I was not going to update to 2.03 since it was merely a fix for folks who had problems updating to 2.0, and since my poly was working perfect, no way was I going to update to 2.03.
Overheating, poly was only on for 5 minutes, as I noticed problems right away as poly was flashing blue to signify that it could not connect to a wifi network, then it started flashing red for battery power left,, plus for the last year, the sd card was inside poly and was never touched and worked perfectly.
My sd card was a sandisk class 10 u1 128gb card, the best make of sd cards, the link that prittipoly mentioned, that is the sandisk formatting tool, 5.01 which did not work as it cannot format it, it always ended up with format failed. Everything I tried ended up in a failure. I tried numerous apps and command line and even a linux live cd, all to no avail.
As I mentioned, it's only a sd card at the end of the day, but will poly do it again if I insert another card ?
I would email matt if it was poly that was dead, but chord don't make and sell sd cards, so no point in contacting chord about it. But I would like auto updating to be stopped, as thats the second time my poly has updated itself without my knowledge, and when updating I do remove the sd card, but since it auto updated without my knowledge, I couldnt take the sd card out.
Update, I fully charged mojo and poly last night, both were on blue. I disconnected them from the charger and left them like that til this morning, I then turned them on and poly's power light is showing green and mojo's is blue.
WHY is poly's battery draining when it's turned off and not connected to the charger or anything else ???