J810GFDDU4CUB2 – Galaxy J8 firmware
Build J810GFDDU4CUB2 is a feature update for the Galaxy J8 (SM-J810GF)
on Android 10. It first appeared on Samsung's servers on Mar 16, 2021 (method) and has reached
1 region so far. It raises the bootloader bit from 3 to 4: once installed, the device no longer accepts firmware with bit 3 or lower, so a downgrade to J810GFDDU3CTL1 is blocked. Samsung still serves this file.
- Model
- SM-J810GF
- Android
- Android 10
- Type
- Feature
- Bootloader bit
- 4
- First released
- Mar 16, 2021
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received J810GFDDU4CUB2, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
INS | India | Mar 16, 2021 | day 0 | J810GFDDU4CUB2/J810GFODI4CUB2/J810GFDDU4CUB1 |
Download and release notes
samloader download -m SM-J810GF -r INS -v J810GFDDU4CUB2/J810GFODI4CUB2/J810GFDDU4CUB1Samsung's release notes and security patch level for this update: SM-J810GF / INS on doc.samsungmobile.com. What each part of the build number means: decode J810GFDDU4CUB2.