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Hi, Before I start I must say that I have 0 experiance with PLC's. So we have a V120-22-UA2 PLC with OS 4.6 and some custom software installed on. The problem is that it won't get out of Bootstrap mode. The system was perfectly fine and working until this morning. Could it somehow be stuck on bootstrap mode and is there anyway that we can get the PLC out of it? I must add that sudden voltage changes are very common in our area and we have aldready tried turning the power supply off and then on.