I just did a firmware update on my Cardo Pack Talk Bold JBL from 5.2 to 5.6 no issues everything is working great. The JBL speakers smoke the Sena speakers I listened to, my friend I ride with had to send his Sena back to factory two times in 5 months so I went Cardo. Time will tell if I chose wisely.
1986 FJ 1200
2008 FJR 1300AE