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I may need to make a little PCB with Eagle, or perhaps try to solder some magnet wire onto the chip's SPI pads. I have just downloaded BlueSuite 2.6.8 and purchased a Chinese CSR USB-SPI programmer on ebay, so I guess this project will be on hold for a few weeks now With the original 8670 module off the board now, I am sure it is going to be a real treat trying to download config data off of it. That dilemma is what brought me to this thread. I am assuming that the problem is that I still need to migrate config data over from the old chip, which probably includes programmable input/output (PIO) settings for the buttons and LEDs, and other configuration settings. After installing the new 8670 module, I have confirmed that all of the power rails supplied by the internal regulators are putting out good voltages, yet I cannot make the headset function. While it was off, thanks to the 8670 datasheet, I was able to map out all of the traces and make a spreadsheet that correlates the BGA pads to the 34 test points located throughout the board. I did successfully remove and replace the 8670 module with hot air and lots of Kapton tape on the surrounding little components so they wouldn't be disturbed. The design of the PCB includes a location for an EEPROM, but it is not populated so I am guessing it used in some of BlueParrott's other headset models.

Thanks Buriedcode! For this particular headset (BlueParrott B350-XT) there is only one chip/module, the CSR8670, in a 112 pad BGA package. Thanks eevblog, this was a great first experience on the forum!!! -Denny Here's a quick recap of what I did to obtain the BlueSuite software, for others that may be in the same dilemma: 1) Register at - you will get grief from the website for using your personal email address vice business email, but you can ignore this 2) Wait for account approval - this took about an hour for me - you will get an email with your account approval and password 3) To download Bluesuite: If you need an older version of the software (Windows Vista, XP, 32-bit, etc.), go to I will get this software installed and use PSTools to migrate the config data from old CSR8670 chip to new. I did a Youtube search for CSR8670, but silly me, I did not expand the search to include other chips in the series - Lesson Learned! The video you shared has provided me with everything I need.