VP59 SIP License

[G.Fuchs]

(10-10-2020 10:11 AM)Kristy_Yealink Wrote:  Dear Customer,

This is Kristy form Yealink technical support team, nice to meet you.

For the issue, please kindly provide the MAC address of the VP59 to us so that we can apply for a license for you.

Best Regards,
Kristy

Hi Kristy,
Thank you for receiving a license from the support. Unfortunately, installing a new firmware still doesn't work.
License could be installed without any problems but when I wanted to upload the new firmware then the upgrade broke with the error message

firmware update failed!

Software limit

Rebooting, please wait...

I'm desperate - what am I doing wrong?

Regards,
Günter