Yeah, I understand for sure. Its a shitty concern being the customer having to worry about something someone else did.
I downloaded the full ISO from MS when they were offering the free upgrades, and just burned it to a USB pen drive for easy installing.... it was a publically available one. If I install a copy of 7 or 8, activate it, then install this over it, it always still lets me activate 10... I think as per the reply above mentioned. But if you are keeping the original drive intact, then you shouldn't have to worry about loosing functionality in the device.
The fact they have windows in test mode means they needed to code their own driver for one reason or another (most likely video knowing how mobile device manufacturers needed to do it in the past).... so you will almost 100% need to recover one or many drivers off that msata drive for the new OS install... But who knows for sure till you dive deeper.
I would highly urge the pandaminer manufacturers to just build an ubuntu or debian image with everything installed on that. It would be the most versatile for an altcoin miner in the end.
it looks like they used the code from here
https://technet.microsoft.com/en-us/library/jj612867.aspxAppendix A: KMS Client Setup Keys
Updated: August 2, 2016
Applies To: Windows 10, Windows 8.1, Windows Server 2012 R2
Computers that are running volume licensing editions of Windows 10, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Server 2008 R2, Windows Vista, and Windows Server 2008 are, by default, KMS clients with no additional configuration needed.
To use the keys listed here (which are GVLKs), you must first have a KMS host running in your deployment. If you haven’t already configured a KMS host, see Deploy KMS Activation for steps to set one up.
If you are converting a computer from a KMS host, MAK, or retail edition of Windows to a KMS client, install the applicable setup key (GVLK) from the following tables. To install a client setup key, open an administrative command prompt on the client, type slmgr /ipk <setup key> and then press Enter.
If you want to…
…use these resources
Activate Windows outside of a volume-activation scenario (that is, you’re trying to activate a retail version of Windows), these keys will not work.
Use these links for retail versions of Windows:
Install, upgrade, & activate (use the menu to the right to select the Windows version you are interested in)
Get a new Windows product key
Genuine Windows Help & How-to
Microsoft Community forum on installation and activation
Fix this error that you get when you try to activate a Windows 8.1, Windows Server 2012 R2 or newer system: “Error: 0xC004F050 The Software Licensing Service reported that the product key is invalid”…
Install this update on the KMS host if it is running Windows 8.1, Windows Server 2012 R2, Windows 8, or Windows Server 2012.
If you are running Windows Server 2008 R2 or Windows 7, be on the lookout for an update to support using those as KMS hosts for Windows 10 clients.
Windows Server 2016
Operating system edition
KMS Client Setup Key
Windows Server 2016 Datacenter
CB7KF-BWN84-R7R2Y-793K2-8XDDG
Windows Server 2016 Standard
WC2BQ-8NRM3-FDDYY-2BFGV-KHKQY
Windows Server 2016 Essentials
JCKRF-N37P4-C2D82-9YXRT-4M63B
Windows 10
Operating system edition
KMS Client Setup Key
Windows 10 Professional
W269N-WFGWX-YVC9B-4J6C9-T83GX
Windows 10 Professional N
MH37W-N47XK-V7XM9-C7227-GCQG9
Windows 10 Enterprise
NPPR9-FWDCX-D2C8J-H872K-2YT43
Windows 10 Enterprise N
DPH2V-TTNVB-4X9Q3-TJR4H-KHJW4
Windows 10 Education
NW6C2-QMPVW-D7KKK-3GKT6-VCFB2
Windows 10 Education N
2WH4N-8QGBV-H22JP-CT43Q-MDWWJ
Windows 10 Enterprise 2015 LTSB
WNMTR-4C88C-JK8YV-HQ7T2-76DF9Windows 10 Enterprise 2015 LTSB N
2F77B-TNFGY-69QQF-B8YKP-D69TJ
Windows 10 Enterprise 2016 LTSB
DCPHK-NFMTC-H88MJ-PFHPY-QJ4BJ
Windows 10 Enterprise 2016 LTSB N
QFFDN-GRT3P-VKWWX-X7T3R-8B639
but what they had before it I don't know.
more info here
http://www.howtogeek.com/250503/how-to-upgrade-to-windows-10-enterprise-without-reinstalling-windows/