I had the same problem. I solved it by downgrading the driver to version 1.41.987.0. I had to do it manually, as I could not overwrite the newer version I had installed. After downgrading, the update installed without a hitch.
Hello.[IMAGE] It repeatedly fails. I enter the BIOS password, it starts and says 100% down, but then "Firmware update failed" with details "Internal Error: Arguments". Does anyone know how to fix this? Thanks in advance Oliver
XPS 15 7590 Thunderbolt Firmware update fails