Greetings, the default PIN does not work any longer. Now trying to enter the PUK; but there is no PUK printed on the labels, neither on the one with the QR code (side) nor on the one sitting at the back. The QR Code sticker shows a SN and a PN - entering the PN (in case that is the Puk Number and not as always used the Part-Number) does not work Picture available if needed