diff --git a/src/Neo.CLI/config.fs.mainnet.json b/src/Neo.CLI/config.fs.mainnet.json
index 08e1cdb35c..a641d0675c 100644
--- a/src/Neo.CLI/config.fs.mainnet.json
+++ b/src/Neo.CLI/config.fs.mainnet.json
@@ -41,8 +41,7 @@
       "HF_Aspidochelone": 3000000,
       "HF_Basilisk": 4500000,
       "HF_Cockatrice": 5800000,
-      "HF_Domovoi": 5800000,
-      "HF_Echidna": 5800001
+      "HF_Domovoi": 5800000
     },
     "StandbyCommittee": [
       "026fa34ec057d74c2fdf1a18e336d0bd597ea401a0b2ad57340d5c220d09f44086",
diff --git a/src/Neo.CLI/config.json b/src/Neo.CLI/config.json
index 904b1a13d2..e9e92f6913 100644
--- a/src/Neo.CLI/config.json
+++ b/src/Neo.CLI/config.json
@@ -39,8 +39,7 @@
       "HF_Aspidochelone": 1730000,
       "HF_Basilisk": 4120000,
       "HF_Cockatrice": 5450000,
-      "HF_Domovoi": 5570000,
-      "HF_Echidna": 5570001
+      "HF_Domovoi": 5570000
     },
     "InitialGasDistribution": 5200000000000000,
     "ValidatorsCount": 7,
diff --git a/src/Neo.CLI/config.mainnet.json b/src/Neo.CLI/config.mainnet.json
index 904b1a13d2..e9e92f6913 100644
--- a/src/Neo.CLI/config.mainnet.json
+++ b/src/Neo.CLI/config.mainnet.json
@@ -39,8 +39,7 @@
       "HF_Aspidochelone": 1730000,
       "HF_Basilisk": 4120000,
       "HF_Cockatrice": 5450000,
-      "HF_Domovoi": 5570000,
-      "HF_Echidna": 5570001
+      "HF_Domovoi": 5570000
     },
     "InitialGasDistribution": 5200000000000000,
     "ValidatorsCount": 7,
diff --git a/src/Neo.CLI/config.testnet.json b/src/Neo.CLI/config.testnet.json
index e838bf08c8..ecd0a8e65c 100644
--- a/src/Neo.CLI/config.testnet.json
+++ b/src/Neo.CLI/config.testnet.json
@@ -39,8 +39,7 @@
       "HF_Aspidochelone": 210000,
       "HF_Basilisk": 2680000,
       "HF_Cockatrice": 3967000,
-      "HF_Domovoi": 4144000,
-      "HF_Echidna": 4144001
+      "HF_Domovoi": 4144000
     },
     "InitialGasDistribution": 5200000000000000,
     "ValidatorsCount": 7,
diff --git a/src/Neo/Cryptography/Ed25519.cs b/src/Neo/Cryptography/Ed25519.cs
index 5919e152b3..585970a4fc 100644
--- a/src/Neo/Cryptography/Ed25519.cs
+++ b/src/Neo/Cryptography/Ed25519.cs
@@ -1,4 +1,4 @@
-// Copyright (C) 2015-2024 The Neo Project.
+// Copyright (C) 2015-2025 The Neo Project.
 //
 // Ed25519.cs file belongs to the neo project and is free
 // software distributed under the MIT software license, see the
diff --git a/src/Neo/ProtocolSettings.cs b/src/Neo/ProtocolSettings.cs
index 085cb1e474..f07df4761f 100644
--- a/src/Neo/ProtocolSettings.cs
+++ b/src/Neo/ProtocolSettings.cs
@@ -132,12 +132,11 @@ public record ProtocolSettings
         /// <returns>Full path of the file if found, null otherwise.</returns>
         public static string FindFile(string fileName, string path)
         {
-
             // Check if the given path is relative
             if (!Path.IsPathRooted(path))
             {
                 // Combine with the executable directory if relative
-                var executablePath = AppDomain.CurrentDomain.BaseDirectory;
+                var executablePath = AppContext.BaseDirectory;
                 path = Path.Combine(executablePath, path);
             }
 
diff --git a/src/Neo/SmartContract/Native/CryptoLib.cs b/src/Neo/SmartContract/Native/CryptoLib.cs
index 3f7aaa95dc..219b19f657 100644
--- a/src/Neo/SmartContract/Native/CryptoLib.cs
+++ b/src/Neo/SmartContract/Native/CryptoLib.cs
@@ -102,7 +102,7 @@ public static bool VerifyWithECDsa(byte[] message, byte[] pubkey, byte[] signatu
         }
 
         // This is for solving the hardfork issue in https://github.com/neo-project/neo/pull/3209
-        [ContractMethod(true, Hardfork.HF_Cockatrice, CpuFee = 1 << 15, Name = nameof(VerifyWithECDsa))]
+        [ContractMethod(true, Hardfork.HF_Cockatrice, CpuFee = 1 << 15, Name = "verifyWithECDsa")]
         public static bool VerifyWithECDsaV0(byte[] message, byte[] pubkey, byte[] signature, NamedCurveHash curve)
         {
             if (curve != NamedCurveHash.secp256k1SHA256 && curve != NamedCurveHash.secp256r1SHA256)
diff --git a/src/Neo/SmartContract/Native/LedgerContract.cs b/src/Neo/SmartContract/Native/LedgerContract.cs
index 758cb4d324..88e9243dd1 100644
--- a/src/Neo/SmartContract/Native/LedgerContract.cs
+++ b/src/Neo/SmartContract/Native/LedgerContract.cs
@@ -310,7 +310,7 @@ public Transaction GetTransaction(DataCache snapshot, UInt256 hash)
             return GetTransactionState(snapshot, hash)?.Transaction;
         }
 
-        [ContractMethod(CpuFee = 1 << 15, RequiredCallFlags = CallFlags.ReadStates, Name = nameof(GetTransaction))]
+        [ContractMethod(CpuFee = 1 << 15, RequiredCallFlags = CallFlags.ReadStates, Name = "getTransaction")]
         private Transaction GetTransactionForContract(ApplicationEngine engine, UInt256 hash)
         {
             TransactionState state = GetTransactionState(engine.SnapshotCache, hash);
diff --git a/src/Neo/SmartContract/Native/RoleManagement.cs b/src/Neo/SmartContract/Native/RoleManagement.cs
index c98eaa611c..0822dc265f 100644
--- a/src/Neo/SmartContract/Native/RoleManagement.cs
+++ b/src/Neo/SmartContract/Native/RoleManagement.cs
@@ -60,7 +60,6 @@ public ECPoint[] GetDesignatedByRole(DataCache snapshot, Role role, uint index)
         }
 
         [ContractMethod(CpuFee = 1 << 15, RequiredCallFlags = CallFlags.States | CallFlags.AllowNotify)]
-        [Obsolete]
         private void DesignateAsRole(ApplicationEngine engine, Role role, ECPoint[] nodes)
         {
             if (nodes.Length == 0 || nodes.Length > 32)
@@ -81,7 +80,7 @@ private void DesignateAsRole(ApplicationEngine engine, Role role, ECPoint[] node
             engine.SnapshotCache.Add(key, new StorageItem(list));
             if (engine.IsHardforkEnabled(Hardfork.HF_Echidna))
             {
-                var oldNodes = new VM.Types.Array(engine.ReferenceCounter, GetDesignatedByRole(engine.Snapshot, role, index - 1).Select(u => (ByteString)u.EncodePoint(true)));
+                var oldNodes = new VM.Types.Array(engine.ReferenceCounter, GetDesignatedByRole(engine.SnapshotCache, role, index - 1).Select(u => (ByteString)u.EncodePoint(true)));
                 var newNodes = new VM.Types.Array(engine.ReferenceCounter, nodes.Select(u => (ByteString)u.EncodePoint(true)));
 
                 engine.SendNotification(Hash, "Designation", new VM.Types.Array(engine.ReferenceCounter, [(int)role, engine.PersistingBlock.Index, oldNodes, newNodes]));