This Firmware flash for Samsung Galaxy J3 (2018) with the Model Number is SM-J337R4. Firmware Region is United States and CSC code is USC . 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 J337R4TYS9BTH2 with OS Pie(Android 9) and the Firmware are build on Thu 03 Sep 2020 13:09:07 pm.

Download Firmware Samsung Galaxy J3 (2018) (SM-J337R4)

AP Version: J337R4TYS9BTH2
CSC Version: J337R4USC9BTH2
Android Version: Pie(Android 9)
Region: USC
Country: United States
Binary: 9
Security patch level : 2020-08-01

Build Date: 2020-09-03 13:09:07
Size: 2.13 GB
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About Phone:

Samsung Galaxy J3 (2018) Android smartphone. Announced Jun 2018. Features 5.0″ IPS LCD display, Exynos 7570 Quad chipset, 8 MP primary camera, 5 MP front camera, 2600 mAh battery, 16 GB storage, 2 GB RAM.

Admin Sep 05, 2020 SM-J337R4, USC

What's new

· The security of your device has been improved.

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How to flash firmware

Extract (unzip) the SM-J337R4_USC_J337R4TYS9BTH2......J337R4TYS9BTH2.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.

The Samsung Galaxy J series is a discontinued line of entry-level Android mobile devices produced by the South Korean company Samsung Electronics, first introduced in 2015. This series is a part of Samsung Galaxy series, placed below the low-range Galaxy M.

Source: wikipedia.org