From 105580ea6f98e2ce084622383bd065098ce95827 Mon Sep 17 00:00:00 2001
From: Rohit Sekhar <merothh@e.email>
Date: Thu, 26 Feb 2026 13:57:46 +0530
Subject: [PATCH] FP4: Force rollback timestamp to be of the 05th of the month

---
 BoardConfig.mk | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/BoardConfig.mk b/BoardConfig.mk
index a00f21f..cbf2fbe 100644
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -177,11 +177,15 @@ SYSTEM_EXT_PRIVATE_SEPOLICY_DIRS += $(DEVICE_PATH)/sepolicy/private
 SYSTEM_EXT_PUBLIC_SEPOLICY_DIRS += $(DEVICE_PATH)/sepolicy/public
 
 # 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
 BOARD_AVB_VBMETA_SYSTEM := system system_ext product
 BOARD_AVB_VBMETA_SYSTEM_KEY_PATH := external/avb/test/data/testkey_rsa2048.pem
 BOARD_AVB_VBMETA_SYSTEM_ALGORITHM := SHA256_RSA2048
-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
-- 
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