This Firmware flash for Samsung Galaxy Mega 5.8 with the Model Number is GT-I9158. 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 I9158ZMUANF3 with OS Jelly Bean(Android 4.2.2) and the Firmware are build on Mon 30 Jun 2014 10:55:00 am.

Download Firmware Samsung Galaxy Mega 5.8 (GT-I9158)

AP Version: I9158ZMUANF3
CSC Version: I9158CHMANF3
Android Version: Jelly Bean(Android 4.2.2)
Region: CHM China Mobile
Country: China
Binary: N/A

Build Date: 2014-06-30 10:55:00
Size: 892.02 MB
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About Phone:

Samsung Galaxy Mega 5.8 I9150 Android smartphone. Announced Apr 2013. Features 5.8″ TFT display, 8 MP primary camera, 1.9 MP front camera, 2600 mAh battery, 8 GB storage, 1.5 GB RAM.

Admin Nov 07, 2020 GT-I9158, CHM

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How to flash firmware

Extract (unzip) the GT-I9158_CHM_I9158ZMUANF3......I9158ZMUANF3.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.