On my SD card for use with my TT ONE XL model 4S00.000R with BL 5.5128:
Replaced previous Western Europe 835.2419 by latest UK & ROI 860.3101. Kept NC SE 8.204.
The original worked very well in my ONE XL - all expected features present and working. The latest map also works well as expected but with one exception - QuickGPSfix is not available through TTHOME.
Investigations:
1. Using a diifferent SD card in TTHOME ...