Hytera GC550 - BWC Manager Downloads
The GC550 is compatible with BWC Manager V3.0.20.000, which can be downloaded here - https://hidrive.ionos.com/share/i-xztjfbvf
The default username and password will be provided by the Speak-IT service team.
If the device does not seem to connect, please try the below:
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Check your Device Manager for this entry:

If this device does not appear as above (likely Amba ***), identify the device (easiest way to identify is to unplug/plug in the device and see what entry disappears/reappears in your Device Manager). -
Download and extract the correct device drivers: https://hidrive.ionos.com/share/6j3biyw14w
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Find the incorrectly labelled device - Right click > properties
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Go to 'driver' tab
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Click 'update driver'
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Click 'Browse my computer for drivers'

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Find the extracted folder and click OK:

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Click 'OK' on the next step - the device should now appear as below:
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Unplug device, reload BWC Manager, and try again. Device should connect upon the correct password entry.