YES, if you flash the .ZIP file using TWRP and you don't wipe anything before, then only your Software is updated, but all settings and your data remains. This oft course only works, if you update weithin your ROM (e.g. you flash a newer CM 12.1 over an existing CM 12.1)
During a call if i activate the phone speaker the other participant can hear me with no issues but if I deactivate the speaker and try to talk back normally he can't hear me no more. Activating the speaker again and the other person can hear me. So basically I can only be heard with speaker option enabled during that specific call if I activated it once.
Hi fridolin42, please read https://source.android.com/security/bulletin/2017-04-01 so that you know what you are asking for (with "anytime soon").
I've found the solution to this issue. It wasn't caused by the ROM but by ACR (Another call recorder). I had to change recording source and problem went away.
I have made a little step towards the right direction and brought the build to PL 2017-04-01, which was relatively easy - however, I had to leave out CVE-2017-0558 and CVE-2017-0560, which are both rated 'moderate' only (but not that easy to patch, as the 7.1 code significantly differs from 5.1 and I am not that familiar with the C programming language): https://www.androidfilehost.com/?fid=457095661767159281
But at least, some critical and high issues are fixed now.
Will try in the next couple of days to move on towards 2017-04-05 and 2017-05-01 . . .
Here's modded framework jar to work with z4 camera port. Combine with Munjeni's ta tool, and you get some excellent pictures...
Camera port - http://forum.xda-developers.com/cro.../port-xperia-z4-framework-sony-stock-t3154772
Munjeni's tool - https://forum.xda-developers.com/crossdevice-dev/sony/poc-real-trim-instead-drm-fix-t3552893
# Your warranty is now void. # # I am not responsible for bricked devices, dead SD cards, # thermonuclear war, or you getting fired because the alarm app failed. Please # do some research if you have any concerns about features included in this ROM # before flashing it! YOU are choosing to make these modifications, and if # you point the finger at me for messing up your device, I will laugh at you.