2.4.1.5 To Perform A Software Upgrade - NEC UX5000 Hardware Manual

2.4.1.5 To Perform a Software Upgrade:

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Chapter 2
As a precaution, it is recommended that the customer database be
saved prior to updating the system software. Refer to Backing Up/
Restoring a Database (page 2-86).
Turn the system power off by first powering down any expansion KSUs, then powering down
the Controlling KSU-B.
Once the system has completed its powering down cycle (all LEDs are off), insert the USB
flash drive containing the software upgrade into the USB connector on the CCPU.
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It is recommended when using a USB flash drive to install it in the CCPU with the system
power turned off. Certain flash drives may cause the system to reset if inserted with the
power on.
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Secured USB flash drives or any other type of USB flash drive that would prompt for
information (such as a password) or a partitioned drive cannot be used. The system will
not be able to access the system files.
Push in and hold the Load/SW1 button.
Press the power button to power the system back up.
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With a multi-KSU system, turn on the expansion KSU's power supply, then the
controlling KSU (KSU-B or KSU-A) power supply.
Continue holding the Load/SW1 button for approximately 10 seconds.
Release the Load/SW1 button.
Wait until LEDs 2-4 are flashing on the CCPU. This could take several minutes.
Turn the system power off by first powering down any expansion KSUs, then powering down
the Controlling KSU-B.
Once the system has completed its powering down cycle (all LEDS are off), remove the USB
flash drive.
Press the power button, first on the expansion KSUs, then on the controlling KSU (KSU-B or
KSU-A) to power the system back up.
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Note: If you hold in the Load/SW1 button at this point,
started, losing all user-defined programming and resetting all the
programs back to default.
do not
If you hold the Load/SW1 button down while powering up, the system is hot-
started and retains all the previous program settings.
When the system has completed reloading the software, the Status LED will begin flashing on
the CCPU. The remaining LEDs will now be off.
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To confirm the new software version has been installed, the system version number can
be viewed by pressing CHECK and then the HOLD key on any display keyset. This can
also be confirmed in Program 90-16-01.
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The existing system software in the flash memory is replaced, but the customer data
(stored in the RAM) is saved.
Chapter 2 - PCB Installation and Startup
the system will be cold
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