Charging stations running firmware 7.4.0–7.4.5 fail to accept remote firmware updates

How do I update an existing charger (NG-firmware 4.x or lower) to a 5.x firmware version or higher with the ACE Service Installer?

NG Firmware version 5.6.1

NG-Firmware version 4.12

NG-Firmware version 4.15.6

NG-Firmware version 4.15.7

NG-Firmware version 5.6.0

NG-Firmware version 6.6.2-4396-BL-upgrade

NG-Firmware version 7.0.5

NG-Firmware version 7.1.0

NG-Firmware version 7.1.3

NG-Firmware version 7.1.6

NG-Firmware version 7.2.0

NG-Firmware version 7.3.0

NG-Firmware version 7.4.0

NG-Firmware version 7.4.2

NG-Firmware version 7.4.4

NG-Firmware version 7.4.5

NG-Firmware version 7.4.6

Perform a firmware update using the My Eve app (NG-Platform only)

Release notes - Firmware updates NG-Platform (NG-910 / NG-920)

Unable to update firmware from Eve Connect using Android device

What is the difference between firmware files with encryption key A or B?

Which firmware update do you need?