Hi there,
I upgraded firmware on DHI-NVR4208-8P and IVS functionality is lost.
Old firmware: V3.201.0000.1.R.20160409
New firmware: V3.203.0000.0.R.20170612
When I try to downgrade - I instantly get "Update failed!" followed by a reboot.
I suspect it is checking for build date or version and doesn't allow downgrade - could someone confirm that this is the case ?
Are there any tested options to downgrade firmware ? I have rs232 working, and I see NVR tries to tftp - but it isn't clear if this is safe way to bypass - I would rather use a tested way.
Any hints appreciated !
Marek
I upgraded firmware on DHI-NVR4208-8P and IVS functionality is lost.
Old firmware: V3.201.0000.1.R.20160409
New firmware: V3.203.0000.0.R.20170612
When I try to downgrade - I instantly get "Update failed!" followed by a reboot.
I suspect it is checking for build date or version and doesn't allow downgrade - could someone confirm that this is the case ?
Are there any tested options to downgrade firmware ? I have rs232 working, and I see NVR tries to tftp - but it isn't clear if this is safe way to bypass - I would rather use a tested way.
Any hints appreciated !
Marek