firmware update for the GTMxx receiver

firmware update for the GTMxx receiver is available

Changes from version 4.60 to version 4.70:
Improved support for China and Dubai.
Changes from version 4.50 to version 4.60:
Fix problem with renewing expired legacy US subscriptions in Canada.
Changes from version 4.40 to version 4.50:
Improve support for multiple free services
Improve Canadian traffic support
Changes from version 4.30 to version 4.40:
Fix possible station lockout problem in Canada
Changes from version 4.20 to version 4.30:
Add support for TULIP hardware
Add support for Canadian traffic
Improve tuning speed, add non-volatile memory of last-tuned channel
Changes from version 4.10 to version 4.20:
Factory diagnostics changes only. No operational changes.
Changes from version 4.00 to version 4.10:
Fix alternate FM station handover problem in U.K.
Changes from version 3.90 to version 4.00:
Fix service provider lock in UK.
Improve acquisition time in U.S.
Changes from version 3.70 to version 3.90:
Improved Alternate Frequency (AF) processing.
Improved station acquisition time.
Improved FM table handler regarding overwrites of oldest stations.
Changes from version 3.60 to version 3.70:
Add fix for frequent traffic queue purging in Germany
When powering-up, automatically tune to last station tuned
Add FM table memory log to autopurge oldest station entry
Add support for Nuvi 6xx FM scan
Changes from version 3.50 to version 3.60:
Corrected problem with linked TMC message displays.
Increased FM memory table to 12 TMC stations.
Added support for alternate American TMC providers.
Changes from version 3.40 to version 3.50:
Improve receiver sensitivity