diff --git a/app/src/main/play/release-notes/en-US/beta.txt b/app/src/main/play/release-notes/en-US/beta.txt
index 6d6904e48d..d2f05a344c 100644
--- a/app/src/main/play/release-notes/en-US/beta.txt
+++ b/app/src/main/play/release-notes/en-US/beta.txt
@@ -1 +1 @@
-TON features are now public. We’ve added Coinbase provider support, migrated WalletConnect to the Reown SDK, and introduced a new price service plus remote asset sync. This update also includes platform/toolchain upgrades required by Google Play and multiple stability/UX fixes (e.g., improved Ethereum recipient checks). Please try key flows (connect/sign, send/receive) and share feedback via Settings → Support.
+TON features are now public. We’ve added Coinbase provider support, migrated WalletConnect to the Reown SDK, and introduced a new price service plus remote asset sync. This update also includes platform/toolchain upgrades required by Google Play, Polkadot SDK stable2503 compatibility via config alignment, and multiple stability/UX fixes (e.g., improved Ethereum recipient checks). Please try key flows (connect/sign, send/receive) and share feedback via Settings → Support.
diff --git a/app/src/main/play/release-notes/en-US/default.txt b/app/src/main/play/release-notes/en-US/default.txt
index a079583c73..b667aad3ee 100644
--- a/app/src/main/play/release-notes/en-US/default.txt
+++ b/app/src/main/play/release-notes/en-US/default.txt
@@ -1 +1 @@
-Fearless 4.2.0 brings public TON features, Coinbase provider integration, migration from WalletConnect to Reown SDK, and a new price service with remote asset sync. Includes platform/toolchain upgrades required by Google Play, stability and UX improvements, and CI hardening. Staged rollout is in progress — please report any issues via Settings → Support.
+Fearless 4.2.0 brings public TON features, Coinbase provider integration, migration from WalletConnect to Reown SDK, and a new price service with remote asset sync. Includes platform/toolchain upgrades required by Google Play, stability and UX improvements, CI hardening, and Polkadot SDK stable2503 compatibility via config alignment. Staged rollout is in progress — please report any issues via Settings → Support.
diff --git a/docs/releases/4.2.0-beta.md b/docs/releases/4.2.0-beta.md
index 5351b2acf3..41af01865c 100644
--- a/docs/releases/4.2.0-beta.md
+++ b/docs/releases/4.2.0-beta.md
@@ -62,3 +62,21 @@ Beta release enabling public TON features, Coinbase provider integration, Reown
 - Toolchain upgrades for Google Play requirements
 - Stability and UX fixes
 
+## Polkadot stable2503 Alignment
+
+To validate against Polkadot SDK stable2503 without code changes, set the following in `local.properties` (or CI env vars):
+
+```
+TYPES_URL_OVERRIDE=https://cdn.jsdelivr.net/gh/soramitsu/shared-features-utils@polkadot-stable2503/chains/all_chains_types_android.json
+DEFAULT_V13_TYPES_URL_OVERRIDE=https://cdn.jsdelivr.net/gh/soramitsu/shared-features-utils@polkadot-stable2503/chains/default_v13_types.json
+CHAINS_URL_DEBUG_OVERRIDE=https://cdn.jsdelivr.net/gh/soramitsu/shared-features-utils@polkadot-stable2503/chains/v13/chains_dev_prod.json
+CHAINS_URL_RELEASE_OVERRIDE=https://cdn.jsdelivr.net/gh/soramitsu/shared-features-utils@polkadot-stable2503/chains/v13/chains.json
+# Optional: pin shared_features to a version compatible with stable2503
+SHARED_FEATURES_VERSION_OVERRIDE=1.x.y
+```
+
+Verify the effective alignment before running tests/builds:
+
+```
+./gradlew printPolkadotSdkAlignment
+```