J730KKKS5CUD1 – Galaxy J7 firmware
Build J730KKKS5CUD1 is a security update for the Galaxy J7 (SM-J730K)
on Android 9. It first appeared on Samsung's servers on May 16, 2021 (method) and has reached
1 region so far. It raises the bootloader bit from 4 to 5: once installed, the device no longer accepts firmware with bit 4 or lower, so a downgrade to J730KKKU4CUA1 is blocked. Samsung still serves this file.
- Model
- SM-J730K
- Android
- Android 9
- Type
- Security
- Bootloader bit
- 5
- First released
- May 16, 2021
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received J730KKKS5CUD1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KTC | South Korea (KT) | May 16, 2021 | day 0 | J730KKKS5CUD1/J730KKTC5CUD1/J730KKKS5CUD1 |
Download and release notes
samloader download -m SM-J730K -r KTC -v J730KKKS5CUD1/J730KKTC5CUD1/J730KKKS5CUD1Samsung's release notes and security patch level for this update: SM-J730K / KTC on doc.samsungmobile.com. What each part of the build number means: decode J730KKKS5CUD1.