Honestly, I try two previous version firmware, 2. Someone sent me email and said they would try. I just share the way of downgrading QC35 ii firmware but don't recommand or encourage anyone to do it.High risk!!!!!!!!!!!!!! It may damage your device.There are the previous firmware files include 2. Just be patient and wait about 5 minutes.ġ0.Check you device, the firmware is downgraded. but countdown.Ģ).there was a progress bar, but went go 100%, error message shows out.
Downgrade firmware bose qc35 ii update#
These files have different name everytime when you update and are removed by BOSE updater after you finish updating.Ĥ.Check the size of the firmware files, match them to the old firmware files.ĥ.Rename the old firmware file to the matched one.ġ).there wasn't progress bar on. 142ģ.Check the name of the three firmware files in C:\Users\\AppData\Local\Temp They are looks like "Bose Updater.aaNNN". Way of downgrade BOSE QC35 ii firmwareĮnvironment: Bose Updater ver is 6., win7, chrome. So, If we hear such notification sound, copy the old firmware files to C:\Users\\AppData\Local\Temp to cheat updater, then it will push the old firmware files to device and update.
And when the device disconnect, there is a notification sound from windows.
Downgrade firmware bose qc35 ii download#
We can find, after finishing download firmware files from the internet, it will reboot the devices to reset it, so the device will disconnect to PC. 23:14:52.854, Info, waitForReset: Wait for device startup 23:14:52.844, Info, waitForReset: Device is reset 23:14:50.806, Info, Device has disconnected
23:14:49.799, Info, Update: Downloading firmware -> Waiting for internal bootmode 23:14:49.799, Info, Enter Internal Bootmode 23:14:47.912, Info, Done downloading (result NoError) (time 56) 23:13:56.003, Info, Done downloading (result NoError) (time 4) 23:13:53.846, Info, Done downloading (result NoError) (time 2) 23:13:51.661, Info, Update: Idle -> Downloading firmware
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