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I can not dowgrade the firmware of a HMI Siemens tp 1200 comfort because it has updated from the portal tia v11 to a version 14. When I try to revert the HMI lock the operating system windows ce. Is there any way to go back to the factory default by doing some jumper on the board or unloading on another port? Because ethernet no longer works to communicate.
Hello All, I hope this post is not against any forum's rules. If so please delete. I would like to invite everyone interested to have a look at my website, which is purely about TIA Portal and everything related: TIA Portal how to There you can find articles, tutorials, tips and videos. Hopefully someone will find it helpful. There are more materials coming so be sure to subscribe to Newsletter There is also: Facebook Fanpage Facebook Group Twitter YouTube Regards, Robert Jankowski