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Xperia Z3 6653 Downgrading Android - need help!

post #1 of 2
Thread Starter 
Hello guys. I made a huge mistake, and that was updating the Android from 5.0.1 to 5.1.1 on my Xperia Z3 6653.

Now, my ring volume is super low, and the battery charge speed is really horrible, 60% for 12 hours.
I have successfully unlocked the bootloader, but i was not able to actually root the phone. KingRoot fails, phone reboots and thats it. A certain version did not reboot the phone, but did not grant me permanent root access, only the app had such, when i uninstalled it, the "root" access was gone.

I need help in flashing another ROM. I have tried various things.

Most of those required Recovery Mode, but it seems that the Z3 6653 doesn't actually have one.

And CWT doesn't really have a stock ROM for my phone, same with TWBT.

I want to downgrade back to 5.0.1 or 5.0.2, or possibly install a custom ROM from CyanogenMod. There is also the Marshmallow 6.0 that is supposedly available to some Z3 Compact/Z3 phones, but i wasnt able to find it.
I tried using fastboot flash recovery on a system.img from the Android TV ARM EABI v7a System IMG file, from the ABD, but it returned UNKNOWN ERROR.

Whatever it is, i just want to have my charging speed back to normal. And the ring volume as well.
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Desktop PC
(22 items)
 
ASUS ROG G72GX
(6 items)
 
 
CPUMotherboardGraphicsGraphics
AMD FX-8320 ASRock Fatal1ty 990FX Killer Sapphire Nitro+ RX480 Sapphire R9 290 Tri-X 
GraphicsRAMHard DriveHard Drive
XFX RX470 Singlefan Mushkin Redline 996996 2x4GB 2133Mhz Maxtor 6Y080L0 80GB 7200 RPM 8MB Western Digital 160GB 7200RPM 8MB 
Hard DriveHard DriveHard DriveOptical Drive
Maxtor 250GB 7200RPM 8MB Corsair Force LS WesternDigital Blue 500GB 7200RPM 16MB ASUS DVD-RW 
CoolingOSOSOS
ThermalTake Frio Silent 14 Windows 10 Enterprise Linux Mint 17.3 Rosa OphCrack 
MonitorKeyboardPowerCase
ASUS VS228HR Logitech K120 Corsair VS650 ThermalTake View 27 
MouseAudio
Bloody V5 Corsair HS30 Raptor 
CPUMotherboardGraphicsRAM
Intel Mobile Core 2 Duo P8700 G72GX NVIDIA GeForce GTX 260M  Hyundai Electronics  
RAMRAM
Hyundai Electronics  Hyundai Electronics  
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post #2 of 2
Thread Starter 
Also, factory reset doesn't help at all...
Desktop PC
(22 items)
 
ASUS ROG G72GX
(6 items)
 
 
CPUMotherboardGraphicsGraphics
AMD FX-8320 ASRock Fatal1ty 990FX Killer Sapphire Nitro+ RX480 Sapphire R9 290 Tri-X 
GraphicsRAMHard DriveHard Drive
XFX RX470 Singlefan Mushkin Redline 996996 2x4GB 2133Mhz Maxtor 6Y080L0 80GB 7200 RPM 8MB Western Digital 160GB 7200RPM 8MB 
Hard DriveHard DriveHard DriveOptical Drive
Maxtor 250GB 7200RPM 8MB Corsair Force LS WesternDigital Blue 500GB 7200RPM 16MB ASUS DVD-RW 
CoolingOSOSOS
ThermalTake Frio Silent 14 Windows 10 Enterprise Linux Mint 17.3 Rosa OphCrack 
MonitorKeyboardPowerCase
ASUS VS228HR Logitech K120 Corsair VS650 ThermalTake View 27 
MouseAudio
Bloody V5 Corsair HS30 Raptor 
CPUMotherboardGraphicsRAM
Intel Mobile Core 2 Duo P8700 G72GX NVIDIA GeForce GTX 260M  Hyundai Electronics  
RAMRAM
Hyundai Electronics  Hyundai Electronics  
  hide details  
Reply
Desktop PC
(22 items)
 
ASUS ROG G72GX
(6 items)
 
 
CPUMotherboardGraphicsGraphics
AMD FX-8320 ASRock Fatal1ty 990FX Killer Sapphire Nitro+ RX480 Sapphire R9 290 Tri-X 
GraphicsRAMHard DriveHard Drive
XFX RX470 Singlefan Mushkin Redline 996996 2x4GB 2133Mhz Maxtor 6Y080L0 80GB 7200 RPM 8MB Western Digital 160GB 7200RPM 8MB 
Hard DriveHard DriveHard DriveOptical Drive
Maxtor 250GB 7200RPM 8MB Corsair Force LS WesternDigital Blue 500GB 7200RPM 16MB ASUS DVD-RW 
CoolingOSOSOS
ThermalTake Frio Silent 14 Windows 10 Enterprise Linux Mint 17.3 Rosa OphCrack 
MonitorKeyboardPowerCase
ASUS VS228HR Logitech K120 Corsair VS650 ThermalTake View 27 
MouseAudio
Bloody V5 Corsair HS30 Raptor 
CPUMotherboardGraphicsRAM
Intel Mobile Core 2 Duo P8700 G72GX NVIDIA GeForce GTX 260M  Hyundai Electronics  
RAMRAM
Hyundai Electronics  Hyundai Electronics  
  hide details  
Reply
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