This is because Bose doesn't allow to install other firmware at this moment. As you can see for yourself it only shows the 4.5.2 version. This link shows the list of available firmwares for this device.Since our device (QC 35 II) has the codename BayWolf it goes to check the following link.Checks to find out based on your ID which next file to look at.When you launch the app and the website it does the following things. This is for advanced users obviously, but feel free to ask question and i will try to answer back anyway i can.īose uses the "Bose Update" software with conjunction to the website. Note: This uses the firmware PRE_RRA from Bose website. Enjoy your OLD FIRMWARE HEADSET! Cheers!.Wait for the update process to complete.Now you can select the firmware 3.1.8 and click on Update.When you see this screen (Screenshot: ) press the following key combination.'a' 'd' 'v' 'up arrow' 'down arrow' and you will see the following screen - Screenshot:.You can close it on the taskbar (right click -> exit) Make sure you close the app before replacing the file.Copy and replace the file in "C:\Program Files (x86)\Bose Updater".Download BOSEUPDATER.EXE from here (megaupload) !wOhHzK6Y!IojFL9hXvWpEW8rZI8Rcs4kzMvbKLvCnm30o_29bWlA. NEW EASIER DOWNGRADE PROCESS: (windows only) DISCLAIMER NOTICE I'm not responsible for bricked devices. If you like my tutorial and the effort i put into this feel free to buy me a coffee ) I just did a manual downgrade from 4.5.2 to 3.1.8 I was hoping by the time they fix the update they would have also fixed their firmware. Bose, the company sells its products throughout the world.īose is best known for its home audio systems and speakers, noise cancelling headphones, professional audio systems, and automobile sound systems.īose seems to have patched the updater and the below methods do not work.
No asking for personal information or serial numbers.īose is an American privately held corporation, based in Framingham, Massachusetts, that specializes in audio equipment.Comparisons between between brand/off brand audio equipment are encouraged but avoid topics not associated with Bose or their products. No outside links, no Ebay/Amazon/Craigslist/etc links.