diff --git a/BoardConfig.mk b/BoardConfig.mk
index 9dad2f8373e982099a4320b5a5040f355ce9ff8a..c4c02275da7c3efca1f306f95f4a6efeb34d43db 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -154,7 +154,7 @@ TARGET_USERIMAGES_USE_F2FS := true
 ENABLE_VENDOR_RIL_SERVICE := true
 
 # Security patch level
-BOOT_SECURITY_PATCH := 2025-09-05
+BOOT_SECURITY_PATCH := 2026-02-05
 VENDOR_SECURITY_PATCH := $(BOOT_SECURITY_PATCH)
 
 # SEPolicy
@@ -164,6 +164,10 @@ SYSTEM_EXT_PUBLIC_SEPOLICY_DIRS += $(DEVICE_PATH)/sepolicy/public
 SYSTEM_EXT_PRIVATE_SEPOLICY_DIRS += $(DEVICE_PATH)/sepolicy/private
 
 # Verified Boot
+SPL_PARTS := $(subst -, ,$(PLATFORM_SECURITY_PATCH))
+SPL_YEAR := $(word 1,$(SPL_PARTS))
+SPL_MONTH := $(word 2,$(SPL_PARTS))
+FIXED_DAY_SPL := $(SPL_YEAR)-$(SPL_MONTH)-05 # Force day to 05 ALWAYS
 BOARD_AVB_ENABLE := true
 ifneq (,$(wildcard user-keys/avb_murena_rsa4096.pem))
 BOARD_AVB_ALGORITHM := SHA256_RSA4096
@@ -176,7 +180,7 @@ BOARD_AVB_VBMETA_SYSTEM_KEY_PATH := user-keys/avb_murena_rsa4096.pem
 else
 BOARD_AVB_VBMETA_SYSTEM_KEY_PATH := external/avb/test/data/testkey_rsa4096.pem
 endif
-BOARD_AVB_VBMETA_SYSTEM_ROLLBACK_INDEX := $(PLATFORM_SECURITY_PATCH_TIMESTAMP)
+BOARD_AVB_VBMETA_SYSTEM_ROLLBACK_INDEX := $(shell date -d 'TZ="GMT" $(FIXED_DAY_SPL)' +%s)
 BOARD_AVB_VBMETA_SYSTEM_ROLLBACK_INDEX_LOCATION := 2
 
 # Wifi
diff --git a/lineage_FP5.mk b/lineage_FP5.mk
index fbe49f9152163056fe34d295db43042f3247f907..be5f63804693daf8bc59a0712dabcf5921194b2e 100644
--- a/lineage_FP5.mk
+++ b/lineage_FP5.mk
@@ -28,5 +28,5 @@ PRODUCT_MANUFACTURER := Fairphone
 PRODUCT_GMS_CLIENTID_BASE := android-alcatel
 
 PRODUCT_BUILD_PROP_OVERRIDES += \
-    BuildFingerprint=Fairphone/FP5/FP5:15/AQ3A.240912.001/VT2E:user/release-keys \
+    BuildFingerprint=Fairphone/FP5/FP5:15/AQ3A.240912.001/VT2M:user/release-keys \
     DeviceProduct=FP5
diff --git a/proprietary-files.txt b/proprietary-files.txt
index 3653a26b40642aa141d63240499508a4f2524d4a..967d1d918eb3706ecd52561294772e0417623d84 100644
--- a/proprietary-files.txt
+++ b/proprietary-files.txt
@@ -1,4 +1,4 @@
-# Unpinned blobs from Fairphone/FP5/FP5:15/AQ3A.240912.001/VT2E:user/release-keys
+# Unpinned blobs from Fairphone/FP5/FP5:15/AQ3A.240912.001/VT2M:user/release-keys
 
 # ACDB
 vendor/etc/acdbdata/IDP/lahaina-yupikidp-snd-card/IDP_Yupik_Bluetooth_cal.acdb