Quote Originally Posted by Genius3 View Post
nuvi 55/56 software version 5.20
as of January 4, 2016

Use Garmin Express to install this file.
(29.21 MB)

Changes made from version 4.50 to 5.20:
• Added support for the Garmin babyCam™ accessory.
• Added support for searching along multiple routes in a trip.
• Improved creating and reviewing trips in Trip Planner.
• Improved routing behavior in areas where vehicle access is restricted.
• Improved search performance.
• Fixed potential issues with reviewing traffic events.
• Fixed an issue with BC 30 that could occur after restoring default user settings.
• Improved software stability.

Code:
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Do maps that have been unlocked with the latest gimgunlock+mapsigpatch continue to work after this software update? Reason I'm asking is because I want to update the UK map on my Nuvi 55LM, but Garmin Express wants to update the software at the same time, and I'm reluctant to do this just yet if it causes the unlocked USA map I've got on a SD card to subsequently fail to load up. Thanks in advance.