Click the button in Odin and select your downloaded TWRP .tar file. Go to the Options tab in Odin and uncheck Auto Reboot .
Note: The first boot can take up to 10 minutes. Do not interrupt the process. Common Troubleshooting Tips
As of late 2025/2026, the most stable and maintained custom ROM for this device is (unofficial, maintained by Kyasu on XDA).
What is listed under your phone settings? (e.g., SM-A530F, SM-A530G) galaxy a8 2018 custom rom
Boot into by holding the Volume Down + Volume Up buttons simultaneously while connecting the phone to your PC via a USB cable. Release when you see a warning screen, then press Volume Up to continue.
Click . Once completed, Odin will display a green "PASS" message. Step 4: Boot into TWRP and Format Data
Highly secure, incredible battery life, lightweight, and regularly updated. Click the button in Odin and select your downloaded TWRP
Return to the Wipe menu, select , type yes , and confirm. Step 4: Flash the Custom ROM and GApps
If you are looking to move away from the aging stock One UI, these are the most stable and popular options currently available: LineageOS Downloads
Always ensure the GSI is ARM64 A-only . Conclusion Do not interrupt the process
The Samsung Galaxy A8 (2018) was a stylish and capable mid-range phone in its heyday, boasting an IP68 rating and a vibrant Super AMOLED display. However, after its last official update to Android 9 Pie, Samsung ceased support, leaving the device vulnerable and lacking modern features. Fortunately, the Galaxy A8 (2018) still has a lot of potential. Installing a custom ROM is the best way to breathe new life into your device, granting you access to modern Android versions, enhanced security patches, new features, and improved performance. This guide will walk you through everything you need to know about the custom ROM scene for the Galaxy A8 (2018).
In TWRP, go to Wipe > Advanced Wipe > Select Dalvik, System, Data, Cache. Swipe to Wipe.
Click the button in Odin and select your downloaded TWRP recovery file ( .tar format). Go to the Options tab in Odin and uncheck Auto Reboot .
This error occurs when the ROM zip file checks the device name and finds a mismatch. Ensure you downloaded the exact zip file made for the Galaxy A8 2018 ( jackpotlte ).