i have updated to last possible firmware, and reset all settings, it didn't help. Yeah, that's the problem i can't edit time, btw it's strange but we have 3 similar devices, 2 of 3 have this issue and last one didn't. First time i be sure that problem could be with gps antena, but when i connected original gps antena which was in teltonika pack, nothing changed. Also i thought that fresh firmware could be a problem, and again it's not. For this moment i have RUT9XX_R_00.06.04.5 firmware and 3.0.1 bootloader