This Firmware flash for Samsung Galaxy Ace 3 with the Model Number is GT-S7278U. Firmware Region is China and CSC code is CHM China Mobile. 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 S7278UZMUANF1 with OS Jelly Bean(Android 4.1.2) and the Firmware are build on Fri 27 Jun 2014 09:42:00 am.

Download Firmware Samsung Galaxy Ace 3 (GT-S7278U)

AP Version: S7278UZMUANF1
CSC Version: S7278UCHMANF1
Android Version: Jelly Bean(Android 4.1.2)
Region: CHM China Mobile
Country: China
Binary: N/A

Build Date: 2014-06-27 09:42:00
Size: 388.71 MB
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About Phone:

Samsung Galaxy Ace 3 Android smartphone. Announced Jun 2013. Features 4.0″ TFT display, Broadcom BCM21664 chipset, 5 MP primary camera, 1800 mAh battery, 8 GB storage, 1000 MB RAM.

Admin Nov 06, 2020 GT-S7278U, CHM

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How to flash firmware

Extract (unzip) the GT-S7278U_CHM_S7278UZMUANF1......S7278UZMUANF1.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.