Android freezes and restarts while writing to /system

Hey guys, I've got THIS going on.
I have a Samsung Galaxy J5 (SM-J500FN) running on stock ROM (a HUN Telenor one BTW).
I have rooted it, and I have TWRP on it.
OEM unlocked. No triangles at boot.

Now, here comes the problem.
Whenever I try to copy, write or edit files in(to) my /system directory (and it's subdirectories) in any way, my phone freezes for 5-10 seconds, then IMMEDIATELY reboots. The file I tried to copy is there, with total 0 bytes.
Yep. Another empty file.

This started as I replaced my bootsamsung.qmg with one I freshly converted from a .zip. Freeze, restart. At the boot, instead of my new bootanimation, I've got the samsung logo screen stuck when the bootanimation was supposed to play.

The phone also freezes for approx. a half minute and the screen doesn't automatically fae out, but meanwhile the touch screen doesn't work.

I cannot edit ANYTHING. I have my /system mounted R/W, I have permissions OK, root is working.
TWRP also happens to be unable to write, and I tried adb.exe on a Windows 7 PC. Same, a 0 byte file.

Could someone tell me WHAT is going on, and how could I fix this?
Appreciating ANY kind of assistance.

Stuck in black screen and white htc writing

Anyone can help me here? So my HTC 10 is the international unlocked version. I bought it from Amazon US and use it in Indonesia.
It worked really fine for more than a month but today something happened.
I turned off the phone and replace the SIM card. When I powered up, it shows only black screen with white htc writing in the center and "powered by android" at the bottom. After a while, there's no change other than the screen turned brighter. It stopped there.
Usually, the normal start up would be green htc logo, and some circles making movement and shapes.

I managed to get into the bootloader screen (volume down, plus power button. And as the logo disappeared, release power button and then press volume up).
Tried to choose reboot, still the same. Tried "reboot to bootloader", it gave the same response as "reboot". Tried "boot to recovery" : nothing significant happened.
Tried "boot to download" : everytime I hit a menu, the screen showed the message that it did the command, but nothing happened after 5 minutes.
Tried to power down, and then charge, the battery percentage didn't show any increase. but it actually charged, because after I entered bootloader and powered off again, charged and then it showed the percentage change. But still not increasing from that later level. And I also couldn't powered on after charge. I had to press volume down and power, to get any response.
What should I do? I suspect major software breakdown even impacted the bootloader? What files can I download (I still confused between RUU, ROM, firmware) to restore my phone. Hopefully it can be done without having to unlock bootloader etc.
Right now it's still "LOCKED", "S-ON", "Software status : Official"..
I just want to restore.. Older firmware will be no problem, as long as it can function normally again and I can update OTA from thereon.
Thank you

[MARSHMALLOW] [6.0.1] Issue writing to External Hard Disk Drive [1TB]

The issue I'm facing is whenever I try to copy or paste a file/folder to my external HDD, I get an error "Unable to create the directory in...".
But, I'm able to copy content from my HDD to my Phone(Android device running Marshmallow). I'm also able to read every file. Not sure why moving files from phone to external HDD is causing a problem.
I'm attaching some screenshots for you to understand better.

Please help!

Attached Thumbnails

 


 


 

Asian writing popping up on my phone now and then.

Hi all. My Xperia Z3 has a problem, it hasn't caused me any undue harm yet but I fear it may. I download a few sideload apps a couple of days ago, this all started after I downloaded them. I've backed up my phone and restored it but still keeps happening.

Any help would be great.

Attached Thumbnails

 


 

Weird Chinese Writing Notification Warnings

Hi there.

This afternoon I have had these notification warnings in Chinese popping up. I'm running the superman rom and kernel and have been on powersaving mode and connected to a public WiFi. Any ideas? I have also scanned for malware

Thanks!

Attached Thumbnails