Lenovo 418734U - IdeaPad S9e 4187 Hardware Maintenance Manual page 61

When you replace the system board, you must set the UUID on the new system
board as follows:
1. Boot the system with DOS.
2. Run the maintenance utility, FL1RW.EXE as follows:
> FL1RW.EXE /w UU
A new UUID is created and written. If a valid UUID already exists, it is not
overwritten.
IdeaPad S9e, S10e, and S10
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