Hello!
I’m not happy with the step size of the volume control of my Gigaset
GS290 when connected to a JBL Flip Essential 2 Bluetooth speaker.
Researching the topic lead me to 1, which suggests modifying
/system/default.prop
, adding the lines
ro.config.vc_call_vol_steps=14
ro.config.media_vol_steps=30
I’ve tried the following:
Installed adb
on my Linux computer. Enabled ‘Developer options’,
‘USB debugging’ and ‘Rooted debugging’ in my phone’s settings.
$ adb devices
List of devices attached
GS290CTM904535 device
$ adb root
restarting adbd as root
$ adb pull /system/build.prop
/system/build.prop: 1 file pulled, 0 skipped. 1.6 MB/s (5177 bytes in 0.003s)
Up to here, this is successful. However, I cannot upload the modified
file to my phone again:
$ adb push build.prop /system/
adb: error: failed to copy 'build.prop' to '/system/build.prop': remote couldn't create file: Read-only file system
Also, I cannot remount /system
:
$ adb remount
failed to remount partition dev:/dev/block/platform/bootdevice/by-name/system mnt:/: Permission denied
failed to remount partition dev:/dev/block/platform/bootdevice/by-name/vendor mnt:/vendor: Permission denied
remount failed
$ adb shell
GS290:/ # mount -o rw,remount /system
mount: '/system' not in /proc/mounts
How to proceed from here?
Thanks
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