XPS 15 9570, service tag deletes from bios

One of the many users who automatically deleted the Service Tag from the bios. <Warranty expired 4 years/27 days ago on August 8, 2019. DELL-Admin>

Good morning as I read on many forums, ultimately in many dells it is happening that the service tag is deleted from the bios or uefi as we want to call it. Reentering manually after not even a day is lost again. I don't know if this depends on an error generated by a windows update which corrupted the eprom itself, but not having entered the service tag, I can tell you that the pc is no longer stable. It restarts by itself and sometimes it struggles to start. Since you are the dell forum, do you have a software tool to provide us to re-enter the service tag permanently without deleting it as it happens by inserting it from the bios? I would not physically have to replace the smd of the eprom on the motherboard to solve it. Thank you.