Bryton 50 upgrade to HD cycle routes query

Not sure if there might be any Bryton 50 GPS users out there but I've seen they are offering a free upgrade of HD Cycle Routes which apparently include off road trails.
I currently use the device mainly on roads, but wouldn't mind taking it off road with the MTB from time to time....
Has anyone tried this upgrade, and does anyone know if upgrading to these maps delete the maps previously loaded onto the device (I thought you could only have one set of maps on it, and potentially have to re-purchase those that might get deleted or replaced)?
cheers
I currently use the device mainly on roads, but wouldn't mind taking it off road with the MTB from time to time....
Has anyone tried this upgrade, and does anyone know if upgrading to these maps delete the maps previously loaded onto the device (I thought you could only have one set of maps on it, and potentially have to re-purchase those that might get deleted or replaced)?
cheers
Scott Solace 10 disc - Kinesis Crosslight Pro6 disc - Scott CR1 SL - Pinnacle Arkose X 650b - Pinnacle Arkose 1x11 "monster cross" - Specialized Singlecross...& an Ernie Ball Musicman Stingray 4 string...
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Giant Defy 3 Adv 2018
"I brake for cake!"
sorry Shuttle censored :shock: :oops:
apologies again :shock:
Seems to be quite an improvement...