Also I dont know what to beleive to. To REV ID? DEVICE ID? or SMD Marking? That is kind of weird. I need confirmation from somebody from ST that my MCU are Clone (and i should not use it ) or not, and point me to the documents where I can get valid i...

According to document from Product page on Mouser (Where actually I bought those MCUs) https://www.mouser.com/PCN/STMicroelectronics_10548.pdfChange is visible through assembly traceability plant, in the marking: - “GQ�? and "GH" for Stats ChipPAC ...

And the screenshot of document is page of ERRATA to L15xx family of devices

Cube Programmer also can not recognize the REV ID:19:16:00 : Board    : -- 19:16:00 : Voltage   : 3.25V 19:16:00 : SWD freq  : 4000 KHz 19:16:00 : Connect mode: Normal 19:16:00 : Reset mode : Software reset 19:16:01 : Device ID  : 0x427 19:16:01 : Re...