diff --git a/packages/apps-config/src/api/spec/avail.ts b/packages/apps-config/src/api/spec/avail.ts
index a5a796ad1a2a..26e11905e082 100644
--- a/packages/apps-config/src/api/spec/avail.ts
+++ b/packages/apps-config/src/api/spec/avail.ts
@@ -81,6 +81,11 @@ const definitions: OverrideBundleDefinition = {
           size: 'Compact<u32>',
           index: 'Vec<DataLookupItem>'
         },
+        CompactDataLookupV4: {
+          size: 'Compact<u32>',
+          index: 'Vec<DataLookupItem>',
+          rowsPerTx: 'Vec<u16>'
+        },
         KateCommitment: {
           rows: 'Compact<u16>',
           cols: 'Compact<u16>',
@@ -91,11 +96,35 @@ const definitions: OverrideBundleDefinition = {
           appLookup: 'CompactDataLookup',
           commitment: 'KateCommitment'
         },
+        V4HeaderExtension: {
+          appLookup: 'CompactDataLookupV4',
+          commitment: 'KateCommitment'
+        },
+        KzgHeader: {
+          _enum: {
+            V4: 'V4HeaderExtension'
+          }
+        },
+        FriParamsVersion: 'u8',
+        FriBlobCommitment: {
+          blobHash: 'H256',
+          sizeBytes: 'u64',
+          commitment: 'Vec<u8>'
+        },
+        FriV1HeaderExtension: {
+          blobs: 'Vec<FriBlobCommitment>',
+          dataRoot: 'H256',
+          paramsVersion: 'FriParamsVersion'
+        },
+        FriHeader: {
+          _enum: {
+            V1: 'FriV1HeaderExtension'
+          }
+        },
         HeaderExtension: {
           _enum: {
-            V1: 'V3HeaderExtension',
-            V2: 'V3HeaderExtension',
-            V3: 'V3HeaderExtension'
+            Kzg: 'KzgHeader',
+            Fri: 'FriHeader'
           }
         },
         DaHeader: {
diff --git a/packages/apps-config/src/api/spec/dataavail.ts b/packages/apps-config/src/api/spec/dataavail.ts
index 2751e80f1f3e..385bab6d52eb 100644
--- a/packages/apps-config/src/api/spec/dataavail.ts
+++ b/packages/apps-config/src/api/spec/dataavail.ts
@@ -89,13 +89,18 @@ const definitions: OverrideBundleDefinition = {
       minmax: [0, undefined],
       types: {
         AppId: 'Compact<u32>',
-        DataLookupIndexItem: {
+        DataLookupItem: {
           appId: 'AppId',
           start: 'Compact<u32>'
         },
-        DataLookup: {
+        CompactDataLookup: {
           size: 'Compact<u32>',
-          index: 'Vec<DataLookupIndexItem>'
+          index: 'Vec<DataLookupItem>'
+        },
+        CompactDataLookupV4: {
+          size: 'Compact<u32>',
+          index: 'Vec<DataLookupItem>',
+          rowsPerTx: 'Vec<u16>'
         },
         KateCommitment: {
           rows: 'Compact<u16>',
@@ -103,29 +108,39 @@ const definitions: OverrideBundleDefinition = {
           commitment: 'Vec<u8>',
           dataRoot: 'H256'
         },
-        V1HeaderExtension: {
-          appLookup: 'DataLookup',
+        V3HeaderExtension: {
+          appLookup: 'CompactDataLookup',
           commitment: 'KateCommitment'
         },
-        V2HeaderExtension: {
-          appLookup: 'DataLookup',
+        V4HeaderExtension: {
+          appLookup: 'CompactDataLookupV4',
           commitment: 'KateCommitment'
         },
-        V3HeaderExtension: {
-          appLookup: 'DataLookup',
-          commitment: 'KateCommitment'
+        KzgHeader: {
+          _enum: {
+            V4: 'V4HeaderExtension'
+          }
+        },
+        FriParamsVersion: 'u8',
+        FriBlobCommitment: {
+          blobHash: 'H256',
+          sizeBytes: 'u64',
+          commitment: 'Vec<u8>'
         },
-        VTHeaderExtension: {
-          newField: 'Vec<u8>',
-          commitment: 'KateCommitment',
-          appLookup: 'DataLookup'
+        FriV1HeaderExtension: {
+          blobs: 'Vec<FriBlobCommitment>',
+          dataRoot: 'H256',
+          paramsVersion: 'FriParamsVersion'
+        },
+        FriHeader: {
+          _enum: {
+            V1: 'FriV1HeaderExtension'
+          }
         },
         HeaderExtension: {
           _enum: {
-            V1: 'V1HeaderExtension',
-            V2: 'V2HeaderExtension',
-            V3: 'V3HeaderExtension',
-            VTest: 'VTHeaderExtension'
+            Kzg: 'KzgHeader',
+            Fri: 'FriHeader'
           }
         },
         DaHeader: {
@@ -159,40 +174,47 @@ const definitions: OverrideBundleDefinition = {
           mandatory: 'u32'
         },
         DataProof: {
-          root: 'H256',
+          roots: 'TxDataRoots',
           proof: 'Vec<H256>',
           numberOfLeaves: 'Compact<u32>',
           leafIndex: 'Compact<u32>',
           leaf: 'H256'
         },
-        DataProofV2: {
+        TxDataRoots: {
           dataRoot: 'H256',
           blobRoot: 'H256',
-          bridgeRoot: 'H256',
-          proof: 'Vec<H256>',
-          numberOfLeaves: 'Compact<u32>',
-          leafIndex: 'Compact<u32>',
-          leaf: 'H256'
+          bridgeRoot: 'H256'
         },
         ProofResponse: {
-          dataProof: 'DataProofV2',
-          message: 'Option<Message>'
+          dataProof: 'DataProof',
+          message: 'Option<AddressedMessage>'
         },
-        Message: {
-          messageType: 'MessageType',
+        AddressedMessage: {
+          message: 'Message',
           from: 'H256',
           to: 'H256',
           originDomain: 'u32',
           destinationDomain: 'u32',
-          data: 'Vec<u8>',
           id: 'u64'
         },
+        Message: {
+          _enum: {
+            ArbitraryMessage: 'ArbitraryMessage',
+            FungibleToken: 'FungibleToken'
+          }
+        },
         MessageType: {
           _enum: [
             'ArbitraryMessage',
             'FungibleToken'
           ]
         },
+        FungibleToken: {
+          assetId: 'H256',
+          amount: 'String'
+        },
+        BoundedData: 'Vec<u8>',
+        ArbitraryMessage: 'BoundedData',
         Cell: {
           row: 'BlockLengthRows',
           col: 'BlockLengthColumns'
diff --git a/packages/apps-config/src/api/typesBundle.ts b/packages/apps-config/src/api/typesBundle.ts
index a5f39679dee2..c8a85b92a4a1 100644
--- a/packages/apps-config/src/api/typesBundle.ts
+++ b/packages/apps-config/src/api/typesBundle.ts
@@ -16355,6 +16355,11 @@ export const typesBundle = {
               "size": "Compact<u32>",
               "index": "Vec<DataLookupItem>"
             },
+            "CompactDataLookupV4": {
+              "size": "Compact<u32>",
+              "index": "Vec<DataLookupItem>",
+              "rowsPerTx": "Vec<u16>"
+            },
             "KateCommitment": {
               "rows": "Compact<u16>",
               "cols": "Compact<u16>",
@@ -16365,11 +16370,37 @@ export const typesBundle = {
               "appLookup": "CompactDataLookup",
               "commitment": "KateCommitment"
             },
+            "V4HeaderExtension": {
+              "appLookup": "CompactDataLookupV4",
+              "commitment": "KateCommitment"
+            },
+            "KzgHeader": {
+              "_enum": {
+                "V4": "V4HeaderExtension"
+              }
+            },
+            "FriParamsVersion": {
+              "_enum": [ "V0" ]
+            },
+            "FriBlobCommitment": {
+              "blobHash": "H256",
+              "sizeBytes": "u64",
+              "commitment": "Vec<u8>"
+            },
+            "FriV1HeaderExtension": {
+              "blobs": "Vec<FriBlobCommitment>",
+              "dataRoot": "H256",
+              "paramsVersion": "FriParamsVersion"
+            },
+            "FriHeader": {
+              "_enum": {
+                "V1": "FriV1HeaderExtension"
+              }
+            },
             "HeaderExtension": {
               "_enum": {
-                "V1": "V3HeaderExtension",
-                "V2": "V3HeaderExtension",
-                "V3": "V3HeaderExtension"
+                "Kzg": "KzgHeader",
+                "Fri": "FriHeader"
               }
             },
             "DaHeader": {
@@ -22748,13 +22779,18 @@ export const typesBundle = {
           ],
           "types": {
             "AppId": "Compact<u32>",
-            "DataLookupIndexItem": {
+            "DataLookupItem": {
               "appId": "AppId",
               "start": "Compact<u32>"
             },
-            "DataLookup": {
+            "CompactDataLookup": {
               "size": "Compact<u32>",
-              "index": "Vec<DataLookupIndexItem>"
+              "index": "Vec<DataLookupItem>"
+            },
+            "CompactDataLookupV4": {
+              "size": "Compact<u32>",
+              "index": "Vec<DataLookupItem>",
+              "rowsPerTx": "Vec<u16>"
             },
             "KateCommitment": {
               "rows": "Compact<u16>",
@@ -22762,29 +22798,39 @@ export const typesBundle = {
               "commitment": "Vec<u8>",
               "dataRoot": "H256"
             },
-            "V1HeaderExtension": {
-              "appLookup": "DataLookup",
+            "V3HeaderExtension": {
+              "appLookup": "CompactDataLookup",
               "commitment": "KateCommitment"
             },
-            "V2HeaderExtension": {
-              "appLookup": "DataLookup",
+            "V4HeaderExtension": {
+              "appLookup": "CompactDataLookupV4",
               "commitment": "KateCommitment"
             },
-            "V3HeaderExtension": {
-              "appLookup": "DataLookup",
-              "commitment": "KateCommitment"
+            "KzgHeader": {
+              "_enum": {
+                "V4": "V4HeaderExtension"
+              }
             },
-            "VTHeaderExtension": {
-              "newField": "Vec<u8>",
-              "commitment": "KateCommitment",
-              "appLookup": "DataLookup"
+            "FriParamsVersion": "u8",
+            "FriBlobCommitment": {
+              "blobHash": "H256",
+              "sizeBytes": "u64",
+              "commitment": "Vec<u8>"
+            },
+            "FriV1HeaderExtension": {
+              "blobs": "Vec<FriBlobCommitment>",
+              "dataRoot": "H256",
+              "paramsVersion": "FriParamsVersion"
+            },
+            "FriHeader": {
+              "_enum": {
+                "V1": "FriV1HeaderExtension"
+              }
             },
             "HeaderExtension": {
               "_enum": {
-                "V1": "V1HeaderExtension",
-                "V2": "V2HeaderExtension",
-                "V3": "V3HeaderExtension",
-                "VTest": "VTHeaderExtension"
+                "Kzg": "KzgHeader",
+                "Fri": "FriHeader"
               }
             },
             "DaHeader": {
@@ -22818,40 +22864,47 @@ export const typesBundle = {
               "mandatory": "u32"
             },
             "DataProof": {
-              "root": "H256",
+              "roots": "TxDataRoots",
               "proof": "Vec<H256>",
               "numberOfLeaves": "Compact<u32>",
               "leafIndex": "Compact<u32>",
               "leaf": "H256"
             },
-            "DataProofV2": {
+            "TxDataRoots": {
               "dataRoot": "H256",
               "blobRoot": "H256",
-              "bridgeRoot": "H256",
-              "proof": "Vec<H256>",
-              "numberOfLeaves": "Compact<u32>",
-              "leafIndex": "Compact<u32>",
-              "leaf": "H256"
+              "bridgeRoot": "H256"
             },
             "ProofResponse": {
-              "dataProof": "DataProofV2",
-              "message": "Option<Message>"
+              "dataProof": "DataProof",
+              "message": "Option<AddressedMessage>"
             },
-            "Message": {
-              "messageType": "MessageType",
+            "AddressedMessage": {
+              "message": "Message",
               "from": "H256",
               "to": "H256",
               "originDomain": "u32",
               "destinationDomain": "u32",
-              "data": "Vec<u8>",
               "id": "u64"
             },
+            "Message": {
+              "_enum": {
+                "ArbitraryMessage": "ArbitraryMessage",
+                "FungibleToken": "FungibleToken"
+              }
+            },
             "MessageType": {
               "_enum": [
                 "ArbitraryMessage",
                 "FungibleToken"
               ]
             },
+            "FungibleToken": {
+              "assetId": "H256",
+              "amount": "String"
+            },
+            "BoundedData": "Vec<u8>",
+            "ArbitraryMessage": "BoundedData",
             "Cell": {
               "row": "BlockLengthRows",
               "col": "BlockLengthColumns"
diff --git a/packages/react-signer/src/TxSigned.tsx b/packages/react-signer/src/TxSigned.tsx
index 3a99aef60520..5bb487d350e3 100644
--- a/packages/react-signer/src/TxSigned.tsx
+++ b/packages/react-signer/src/TxSigned.tsx
@@ -24,12 +24,11 @@ import { Button, ErrorBoundary, Modal, Output, styled, Toggle } from '@polkadot/
 import { useApi, useLedger, useQueue, useToggle } from '@polkadot/react-hooks';
 import { keyring } from '@polkadot/ui-keyring';
 // import { settings } from '@polkadot/ui-settings';
-import { assert, BN_ZERO, nextTick } from '@polkadot/util';
+import { assert, nextTick } from '@polkadot/util';
 import { addressEq } from '@polkadot/util-crypto';
 
 import { AccountSigner, LedgerSigner, QrSigner } from './signers/index.js';
 import Address from './Address.js';
-import AppId from './AppId.js';
 import Qr from './Qr.js';
 import SignFields from './SignFields.js';
 import Tip from './Tip.js';
@@ -249,7 +248,6 @@ function TxSigned ({ className, currentItem, isQueueSubmit, queueSize, requestAd
   const [{ innerHash, innerTx }, setCallInfo] = useState<InnerTx>(EMPTY_INNER);
   const [tip, setTip] = useState<BN | undefined>();
   const [initialIsQueueSubmit] = useState(isQueueSubmit);
-  const [appId, setAppId] = useState(BN_ZERO);
 
   useEffect((): void => {
     setFlags(tryExtract(senderInfo.signAddress));
@@ -341,7 +339,7 @@ function TxSigned ({ className, currentItem, isQueueSubmit, queueSize, requestAd
       if (senderInfo.signAddress) {
         const [tx, [status, pairOrAddress, options, isMockSign]] = await Promise.all([
           wrapTx(api, currentItem, senderInfo),
-          extractParams(api, senderInfo.signAddress, { appId, nonce: -1, tip, withSignedTransaction: true } as Partial<SignerOptions>, getLedger, setQrState)
+          extractParams(api, senderInfo.signAddress, { nonce: -1, tip, withSignedTransaction: true } as Partial<SignerOptions>, getLedger, setQrState)
         ]);
 
         queueSetTxStatus(currentItem.id, status);
@@ -350,7 +348,7 @@ function TxSigned ({ className, currentItem, isQueueSubmit, queueSize, requestAd
         await signAndSend(queueSetTxStatus, currentItem, tx, pairOrAddress, options, api, isMockSign);
       }
     },
-    [api, appId, getLedger, tip]
+    [api, getLedger, tip]
   );
 
   const _onSign = useCallback(
@@ -460,7 +458,6 @@ function TxSigned ({ className, currentItem, isQueueSubmit, queueSize, requestAd
                 {!currentItem.payload && (
                   <Tip onChange={setTip} />
                 )}
-                <AppId onChange={setAppId} />
                 {!isSubmit && (
                   <SignFields
                     address={senderInfo.signAddress}