I used the tool Win_FWTool_v188.8.131.52.zip and upgraded my phaser 6510 with this firmware 64.21.81_PH6510.zip.
The tool showed 100% and I closed it after the message, the printer showed 100% of the download finished, then it showed please wait and restarted.
Now I restarted it a serveral times it only shows "Please Wait ..." for hours ...
I think maybe the firmware update failed and it is not possible to boot.
Is there a way I can factory reset the printer to its default firmware? When I am trying to push buttons a LED starts to blink in an violett/ red light and the "Please wait..." Message still keeps.
How long does the installation took place after the update? I mean it were 250 mb ...