Samsung YP-R1 Service Manual page 45

Troubleshooting
4-2-6 Firmware Upgrade (Mboot, kernal, zmage) (B-4)
1. Practice "R1Update Tool.exe" file in the
Upgrade Tool folder.
 Check if you want to erase NAND all.
2. Choose the firmware (R1.ROM is in the
firmware realease).
3. You can upgrade all if you choose each images
that Mboot, Linux, Root File & System file.
 Skip image (Mboot or Linux or Root File
System) if you don't need to upgrade.
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