I updated S2600CP2 board using Intel Deployment Assistant 5 (build5 - most recent), updating from a network source.
The README advised to update in order, so I booted from the Deployment Assistant disk, and updated to
BIOS: 02.01.0002 successfully. I booted again, and updated to BMC: 1.19.r5018 successfully. I booted again to update ME firmware from 02.01.07.112 to 02.01.07.231 but after about 1/3 of detecting my configuration, it stopped with the error 'Internal Error: unable to proceed".
After power off, reboot, tried again - same result.
How can I finish the installs which were part of this package?
Actually I don't think you need to reboot every time after updating one component...
Anyway, you can try to boot to EFI shell and update from there. See the readme for step-by-step instruction.