What is the listed under your "System Update" menu?
The version 1.70.8 suggests a stable but possibly dated firmware. Before upgrading: pd1731f-ex-a-1.70.8
The "1.70.8" in the model strongly hints at , which would be used to flash the device configuration. What is the listed under your "System Update" menu
Ensure the file is not corrupted and that you have at least 50% battery remaining. pd1731f-ex-a-1.70.8
Rolling back removes any security patches introduced in 1.70.8. Only roll back if the issue cannot be mitigated otherwise.