diff --git a/cores/tuya_open/DsoHack.cpp b/cores/tuya_open/DsoHack.cpp
deleted file mode 100644
index 7ee3621..0000000
--- a/cores/tuya_open/DsoHack.cpp
+++ /dev/null
@@ -1,107 +0,0 @@
-/*
- *    Copyright (c) 2021 Project CHIP Authors
- *
- *    Licensed under the Apache License, Version 2.0 (the "License");
- *    you may not use this file except in compliance with the License.
- *    You may obtain a copy of the License at
- *
- *        http://www.apache.org/licenses/LICENSE-2.0
- *
- *    Unless required by applicable law or agreed to in writing, software
- *    distributed under the License is distributed on an "AS IS" BASIS,
- *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *    See the License for the specific language governing permissions and
- *    limitations under the License.
- */
-
-// This hack is needed because Beken SDK is not linking against libstdc++ correctly.
-#if defined (ARDUINO_T2) || defined (ARDUINO_T3) || defined(ARDUINO_T5)
- extern "C" {
- void * __dso_handle = 0;
- }
-
-
- //Warkaround for ld error:undefined reference to '__sync_synchronize'
-//refer to https://stackoverflow.com/questions/64658430/gnu-arm-embedded-toolchain-undefined-reference-to-sync-synchronize
-extern "C" void __sync_synchronize() {}
-
-extern "C" unsigned int __atomic_fetch_add_4(volatile void * ptr, unsigned int val, int memorder)
-{
-    return (*(unsigned int*)ptr + val);
-}
-
-extern "C" bool __atomic_compare_exchange_4(volatile void* pulDestination, void* ulComparand, unsigned int desired, bool weak, int success_memorder, int failure_memorder)
-{
-    bool ulReturnValue;
-    if( *(unsigned int*)pulDestination == *(unsigned int*)ulComparand )
-    {
-        *(unsigned int*)pulDestination = desired;
-         ulReturnValue = true;
-    }
-    else
-    {
-        *(unsigned int*)ulComparand = *(unsigned int*)pulDestination;
-        ulReturnValue = false;
-    }
-    return ulReturnValue;
-}
-
-extern "C" unsigned int __atomic_fetch_sub_4(volatile void * ptr, unsigned int val, int memorder)
-{
-    return (*(unsigned int*)ptr + val);
-}
-extern "C" bool __atomic_compare_exchange_1(volatile void* pulDestination, void* ulComparand, unsigned char desired, bool weak, int success_memorder, int failure_memorder)
-{
-    bool ulReturnValue;
-    if( *(unsigned char*)pulDestination == *(unsigned char*)ulComparand )
-    {
-        *(unsigned char*)pulDestination = desired;
-         ulReturnValue = true;
-    }
-    else
-    {
-        *(unsigned char*)ulComparand = *(unsigned char*)pulDestination;
-        ulReturnValue = false;
-    }
-    return ulReturnValue;
-}
-
-extern "C" unsigned int __atomic_fetch_and_4(volatile void *pulDestination, unsigned int ulValue, int memorder)
-{
-    unsigned int ulCurrent;
-
-    ulCurrent = *(unsigned int*)pulDestination;
-    *(unsigned int*)pulDestination &= ulValue;
-    return ulCurrent;
-}
-
-extern "C" bool __sync_bool_compare_and_swap_4(volatile void* ptr, unsigned int oldval, unsigned int newval)
-{
-    if(*(unsigned int*)ptr == oldval)
-    {
-        *(unsigned int*)ptr = newval;
-        return true;
-    }
-    else
-    {
-        return false;
-    }
-}
-
-extern "C" bool __sync_bool_compare_and_swap_1(volatile void* ptr, unsigned char oldval, unsigned char newval)
-{
-    if (*(unsigned char*)ptr == oldval)
-    {
-       *(unsigned char*)ptr = newval;
-        return true;
-    }
-    else
-    {
-        return false;
-    }
-}
-
-/* stub for __libc_init_array */
-extern "C" void _fini(void) { }
-extern "C" void _init(void) {;}
-#endif