AdamOutler Posted July 2, 2015 Report Share Posted July 2, 2015 I mucked around for about 16 hours this weekend playing with the AVIC 8100 NEX, firmware update, source code, and SD card. I have never worked with Freescale or EasyRecovery so I'm not sure which features to attribute to which manufacturer, or how they work. I'm hoping to start a conversation about this here and maybe pioneer a custom Pioneer Android ROM, which would add some serious value to our devices. First off, does anyone know the SD CMD42 password for the SDCard? Overall: This generation runs Android. The UI is entirely Android. The partitions in the update are standard Android partitions but instead of just boot and recovery, there is a third Linux kernel "boot.img" formatted image for some reason. Update: The partitions are signed. Each file in a folder inside the update is a separate whole partition image. They also each have a corresponding version information file in the root dir of the update which point to the folder which they are contained. They contain a header with some information, followed by a series of 0xFF's, then the partition starts. You can remove the header from the files and you have a mountable partition. Using Linux I was able to mount the SYSTEM and tear apart the boot.img files. It's all standard Android, but I have no idea how to sign them after modification to be used with EasyRecovery. Source: The GPL compliance source code is overwhelming. It's not contained in one place. It's a series of patches which go against mainline Android 4.2.2. I'm not sure if it's complete and even if it is, I don't know how to place it onto the device or sign it for EasyRecovery. Does anyone have some insight? If I could get the SD password, I could do some serious work and start by removing the nag screen on startup, then move on to forcing Android Auto to Auto-play on deck startup. Any ideas? Quote Link to post Share on other sites
EditorDZ Posted July 2, 2015 Report Share Posted July 2, 2015 Best answer I can come up with is to check out this thread: http://avic411.com/index.php?/topic/80945-upgrading-nex4000-to-nex4100-work-in-progress/ and these blog entries: https://fail0verflow.com/blog/2014/enhancing-the-avic-5000nex.html https://fail0verflow.com/blog/2014/enhancing-the-avic-5000nex-pt2.html That might answer some of your questions, and help avoid doing duplicate work. I wish I could help more. God speed, I hope you can make some progress, I would really love to put the 8100 firmware onto the 8000 hardware (we're really close, but no cigar. see thread above) Quote Link to post Share on other sites
mschauta Posted July 2, 2015 Report Share Posted July 2, 2015 http://www.oss-pioneer.com/car/multimedia/files/avic-5100nex/index.html This will help you? Quote Link to post Share on other sites
WhatIsWhatIsWhatIsWhat Posted July 2, 2015 Report Share Posted July 2, 2015 [deleted post] Quote Link to post Share on other sites
mschauta Posted July 4, 2015 Report Share Posted July 4, 2015 http://www.weiku.com/products/12453995/Portable_SD_MMC_Medium_Memory_Card_Unlock_Decoder.html Quote Link to post Share on other sites
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