Use A Golden Key U1 Tool To Flash-Write Key Id Information - Lenovo ThinkBook 14s Yoga Gen 3 Hardware Maintenance Manual

Figure 24. Disconnect cables connected to the system board
Step 3. Remove one screw and then remove the system board.
Figure 25. Remove the system board
Screw specifications
M1.98 x L3
Go to
https://support.lenovo.com/partslookup
part:
System board

Use a Golden Key U1 tool to flash-write key id information

After replacing the system board and re-assembling the computer, use a pre-made Golden Key U1 tool to
start the computer and flash-write the serial number (SN), machine type (MT), product name (PN), and UUID
to the new system board.
The Golden Key U1 tool is prepared by running the U1 Update software on a FAT32-formatted USB thumb
drive. Go to http://support.lenovo.com/us/en/solutions/HT506954
and use a Golden Key U1 tool.
Number of screws
1
to look up the Lenovo part number of the following replacement
for detailed instructions on how to create
.
Chapter 4 Removing a FRU or CRU
43