Many thanks to Jun for this loader and all your hard work and also the developers, admins and everybody that make this community awesome.
I have just used this loader to upgrade my bare metal HP Gen 8 Microserver (i3-3240 CPU)
Happy to report that I did Migration from DS3617xs Ver.6.1.7-15284 to DS3617xs Ver.6.2-23739 without any problem. Data and settings intact. 😀