i9070 broken lcd + after working with adb shell doesnt boot (nosound) ..

Hey xda-community,

might be a long text to read but i want to make it as detailed as possible :/.

I have an i9070 with broken lsd (+touch not working) and pattern lock.
To acces to the internal storage i hat to delete the pattern lock.
So first of all i booted into recoverymode (TWRP) and removed the pattern lock via adb shell ("rm /data/system/gesture.key").
After a reboot i was able to acces to the internal storage with my PC , finally.

But then i had the genious idea to use Droid@Screen...
Since i hadn't USB Debugging activated i tried to activate it with the adb.
I searched in the www, found something and tried it right away.
The 1st step was "adb pull /system/build.prop build.prop"
Then edit the build.prop and add the line "persist.service.adb.enable=1"
and after that i had to push ot back, but i couln't.
So i searched again in the www and found a way to mount /system ..... (prob for the false device ,_, )

The commands where:
mount -o rw,remount -t ext4 /dev/block/mmcblk0p8 /system
and
mount -o ro,remount -t ext4 /dev/block/mmcblk0p8 /system

so i tried the 1st command and forgot the 4 after ext, so i typed it in the adb shell like:
# mount -o rw,remount -t ext /dev/block/mmcblk0p8 /system
and after that
# mount -o rw,remount -t ext4 /dev/block/mmcblk0p8 /system

after that i was able to push the build.prob back, and i used
# mount -o ro,remount -t ext /dev/block/mmcblk0p8 /system
and
# mount -o ro,remount -t ext4 /dev/block/mmcblk0p8 /system

afterwards.
After a reboot it kind of stuck while booting :/ (since i cant see anything i didnt heard the sound while booting).
So i tried the push back the original build.prop without the extra line.
Still not booting..

I ended trying all commands without any order:
# mount -o ro,remount -t ext /dev/block/mmcblk0p3 /system
# mount -o rw,remount -t ext /dev/block/mmcblk0p3 /system
# mount -o ro,remount -t ext4 /dev/block/mmcblk0p3 /system
# mount -o rw,remount -t ext4 /dev/block/mmcblk0p3 /system
# mount -o ro,remount -t ext /dev/block/mmcblk0p8 /system
# mount -o rw,remount -t ext /dev/block/mmcblk0p8 /system
# mount -o ro,remount -t ext4 /dev/block/mmcblk0p8 /system
# mount -o rw,remount -t ext4 /dev/block/mmcblk0p8 /system
chmod 755 system
chmod 777 system
sync


i used also mount..../mmcblk0p3 instead of mmcblk0p8 because after using "mount" it showed behind the /system mmcblk0p3 ...
i think i messed too much around as a newbie :crying:
I am still able to use adb in recovery mode but cant acces the internal storage.

Would be nice if someone could help me :)
Ty if you read the whole text .. ^^