This Firmware flash for Samsung Galaxy Mega 2 with the Model Number is SM-G7509. Firmware Region is China and CSC code is CTC China Telecom. Make sure the Model Number are correct with you device. You can check the Model Number in Setting - About phone (Model Number), If phone can't start you can find it by flipping your phone or among the things you found in the box. This Firmware PDA is G7509KEU1AOF1 with OS KitKat(Android 4.4.4) and the Firmware are build on Fri 05 Jun 2015 17:01:00 pm.

Download Firmware Samsung Galaxy Mega 2 (SM-G7509)

AP Version: G7509KEU1AOF1
CSC Version: G7509CTC1AOF1
Android Version: KitKat(Android 4.4.4)
Region: CTC China Telecom
Country: China
Binary: 1

Build Date: 2015-06-05 17:01:00
Size: 1.11 GB
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About Phone:

Samsung Galaxy Mega 2 Android smartphone. Announced Sep 2014. Features 6.0″ IPS LCD display, Exynos 4415 chipset, 8 MP primary camera, 2.1 MP front camera, 2800 mAh battery, 16 GB storage, 1.5 GB RAM.

Admin Nov 07, 2020 SM-G7509, CTC

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How to flash firmware

Extract (unzip) the SM-G7509_CTC_G7509KEU1AOF1......G7509KEU1AOF1.zip file. using WinRAR or 7-Zip.
Download Odin Tool 3.14.1
Extract Odin and open it.
Reboot Samsung Phone in Download Mode (hold Home + Power + Volume Down buttons / hold Volume Down + Bixby buttons then plug-in cable)
Connect you Samsung Phone and wait until you get a BLUE sign in Odin.
Add the 1 file Samsung firmware to AP/PDA or 4 files Samsung firmware (AP/BL/CP/CSC) to it's slots.
Do NOT tick any extra boxes. The only options to be ticked are F.Reset Time and Auto-Reboot.
Click the start button, wait for Odin to say 'PASS' in a GREEN sign. Once the flash is complete, your phone will reboot, and you can disconnect your phone from the PC.