| Manufacturer | Infinix |
| Model | infinix-x6851b |
| Installs | Infinix/X6851B-OP/Infinix-X6851B:15/AP3A.240905.015.A2/145007:user/release-keys |
| Updates from | Infinix/X6851B-OP/Infinix-X6851B:15/AP3A.240905.015.A2/127008:user/release-keys |
| Security patch | 2026-01-01 |
| SDK | 35 |
| Size | 356.2 MB |
| Install method | Seamless A/B (A/B) |
| Updated partitions | odm_dlkm product system system_ext tr_carrier tr_company tr_mi tr_preload tr_product tr_region tr_theme vendor vendor_dlkm |
| Build date | 2025-12-11 |
NOTE 40 Pro+ 5G — AP3A.240905.015.A2
Release notes
Please plug in charger to OTA upgrade when power is lower than 50%.
Update Version:
X6851B-15.1.2.145SP02(OP001PF001AZ)
Changed Functions:
1. Updated Google Security Patch to January 1, 2026.
2. Upgraded Folax (voice assistant) to version 4.8.1.
Fixed Issues:
1. Fixed the occasional stability issue during screen recording, improving overall recording reliability.
2. Fixed the issue where the device could occasionally fail to unlock in certain scenarios, making unlocking more reliable and secure.
Reminding:
1. Optimized system stability and performance while fixing other issues.
2. Visit the XClub forum (https://www.infinix.club) for more information.