Internal Storage Reduced to 3.8GB topic

Hello .
Today I tried to Upgrade to B602 .
First I Installed B133. Then After The Update of B602 I Got Error of Com.android.process.phone has Stopped .
Then After i Restored Back To B135 using 3-Button Method Internal Storage Was Reduced to 3 Gb
Can SomeOne Help Me Please .'
@surdu_petru @natorus87

Need Urgent Help :crying::crying::crying::crying:

The volume of the ringtone is reduced spontaneously. topic

Some time ago I updated my Xperia Z1 to firmware .157.
Since then it happens that the incoming call ringer volume is very low. So I increased the volume on the audio settings. But the next call volume is still low. By controlling the audio settings of course I find the volume slider much lower as I had previously set.
What could be the solution?
Thanks.