Actaeon Posted January 14, 2013 Report Share Posted January 14, 2013 Hi All, Thinking about upgrading the firmware on my app radio sphda02 from 4.13 to 4.16. According to pioneer, it removes the "allow" bug. My concern is currently I am using a standard bypass relay, and its working great. Can anyone confirm that upgrading does or does not change the parking brake settings? Any other reasons why it's a bad idea to upgrade? Thanks for the help.. Quote Link to post Share on other sites
texbuck Posted January 14, 2013 Report Share Posted January 14, 2013 Does the "allow" bug bother you badly? If not, I would just leave it alone. Reading the instruction manual for the sph-da02 on the pioneer website, it says that the brake must be applied, released, and reapplied (just like the appradio2), which means a simple relay won't work. Quote Link to post Share on other sites
americonium Posted January 15, 2013 Report Share Posted January 15, 2013 A PAC TR7 relay can be programmed to bypass the PB. Quote Link to post Share on other sites
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