BrightSign Object Reference Manual (FW 5.1) - Manual (Page 305)

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o "sdhc": SDHC only
Example:
di = CreateObject("roDeviceInfo")
print di.GetModel()
print di.GetVersion(), di.GetVersionNumber()
print di.GetBootVersion(), di.GetBootVersionNumber()
print di.GetDeviceUptime(), di.GetDeviceBootCount()
On a particular system, this generates:
HD1010
3.2.41 197161
3.2.28 197148
14353 3129