Download “PE2950_BIOS_LX_2.7.0.BIN” from Dell with the service Tag.
1. Upload the file to CentOS box to /home/user.
2. Change the file to executable:
# chmod +x PE2950_BIOS_LX_2.7.0.BIN
3. Upgrade Bios firmware:
# ./PE2950_BIOS_LX_2.7.0.BIN
4. Once BIOS image file is successfully loaded. Reboot your system to complete the update.