False battery status after firmware update, 'phone modified' messagge when checking for updates

[mbrn2]

Hello!

Several days ago (I don't remember exactly when) I got message about firmware update, which I applied when I got to wi-fi and plugged my phone into the charger.
Few days later, battery started to act odd (not really the battery, but its icon to be precise):
- sometimes it says "Charged 100%" (or Charging if any other percentage) after unplugging it and the battery icon still has the "thunder"
- No sound when plugging out
- sometimes it returns to normal after a while, sometimes not

I reckoned it could be related to firmware update, so I went to Settings>About device>Software update>Check for updates in order to check if there's a fix, but I got the message: "Your device has been modified. Software updates are not available."
But what does it mean? I have never done any modifications on the device, at least that I'm aware of. I don't use odd applications, and I don't even know what is root and what does it do, so I reckon I haven't performed it.
Was the firmware update some kind of scam?
What can I do to fix it?

Model number is GT-I18190N, Android 4.1.2.

Please help...:'(

 

[GSDer]

Hello and welcome to the forums!

4.1.2 does appear to be the latest stock firmware available for your model http://samsung-updates.com/device/?id=GT-I8190N but it does sound like something got borked when you loaded the recent update. You could try using the Kies software to reload the firmware or you could use a tool called Odin to manually load it.

Sent from my rooted, debloated, deodexed Sinclair ZX-80 running CM -0.001 using Tapatalk

 

[mbrn2]

Hi!
Thanks for the welcome and the reply.
Now when I check for the updates, it says that it is up to date. I no longer get the modification message. Could the problem be mechanical instead of software related?
I still have the warranty for the device.

 

[GSDer]

I'd recommend booting into Recovery mode and clearing the system cache and performing a Factory Reset - that should take care of any squirrelly behavior. (Be sure to backup your data using the Kies software or your tools of preference first.)

Sent from my rooted, debloated, deodexed Sinclair ZX-80 running CM -0.001 using Tapatalk