603brown Posted April 26, 2016 Report Share Posted April 26, 2016 hi all. new install of AVH-4100NEX here. firmware was upgraded to 1.05. when i attempt to watch video from SD card i cannot get past the warning screen which asks me to engage-release-engage the parking brake. (see image.) i have the microbypass circuit installed so --i assume-- it is unable recognize that ive engaged the brake and thus the ÓK remains greyed out. 1. does anyone running old firmware (such as 1.03) encounter this problem? 2. might anyone have an old copy of the 1.03 firmware that they could link to? 2a. is it even possible to back rev the firmware on this unit? many thanks,mike microbypass circuit http://www.amazon.com/MicroBypass-Parking-Automatic-Interface-AVH-4100NEX/dp/B00VKQ6ECQ Quote Link to post Share on other sites
Multitask Posted April 26, 2016 Report Share Posted April 26, 2016 My guess is that it's not hooked up correctly... double check the install... Quote Link to post Share on other sites
doleydaddy Posted April 29, 2016 Report Share Posted April 29, 2016 How did u put the videos on the SD card Quote Link to post Share on other sites
cdsmith Posted June 30, 2016 Report Share Posted June 30, 2016 Same exact problem as OP. 'OK' button is grayed out on the 'CAUTION' screen. Microbypass is installed and worked prior to upgrading firmware. Any suggestions? Quote Link to post Share on other sites
redrockray Posted July 6, 2016 Report Share Posted July 6, 2016 Ran into this same issue after upgrading to 1.053. No fix other than rolling back to the previous firmware. I believe this is it. http://drivers.softpedia.com/get/DVD-BluRay-Media-Players/Pioneer/Pioneer-AVH-4100NEX-A-V-Receiver-Firmware-103.shtml Quote Link to post Share on other sites
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