diff --git a/CanUds.c b/CanUds.c
index 05f0ea9..d39d64b 100644
--- a/CanUds.c
+++ b/CanUds.c
@@ -1097,17 +1097,19 @@ vUDS_routine_Check_Programming_Dependancies(tCanUds *env, eUdsRoutineControlType
     char *version_id_main = (char *) (ADR_HEX_BlockMain + 0x400);
     int result = memcmp(version_id_main, version_id, 9);
 
-/*
+
     if ((env->CheckSum_BlockMain == false) || (env->CheckSum_BlockCalib == false) || (env->CheckSum_BlockMeta == false)) {
         LoggerErrorStatic(LOGGER, LOG_SIGN, "At least one logical block missing");
         env->dataResponse[4] = 4;
-    } else if (result != 0) {
+        return 4 + 1;
+    }
+
+    if (result != 0) {
         LoggerErrorStatic(LOGGER, LOG_SIGN, "Software incompatibility");
         env->dataResponse[4] = 3;
-    } else {
-        env->dataResponse[4] = UDS_routine_RoutineStartStopSuccess;
+        return 4 + 1;
     }
-*/
+
     setResponseErrorPending(env, UDS_RoutineControl, UDS_error_requestCorrectlyReceived_ResponsePending);
 
     uint32_t crc32_calc = UdsCrc32Update(0xFFFFFFFF, (uint8_t *) ADR_HEX_Mapped_BlockMain,
@@ -1116,7 +1118,8 @@ vUDS_routine_Check_Programming_Dependancies(tCanUds *env, eUdsRoutineControlType
     crc32_calc = UdsCrc32Finalize(crc32_calc);
 
     memcpy(&env->data->data[1024], (uint8_t *) ADR_HEX_Mapped_BlockMeta, SIZE_HEX_BlockMeta);
-    (*(uint32_t *) (SIZE_HEX_BlockMeta - 4)) = crc32_calc;
+    uint32_t *crcFromFlash = (uint32_t *) (SIZE_HEX_BlockMeta - 4);
+    *crcFromFlash = crc32_calc;
 
     result = env->clear_flash_func(ADR_HEX_Mapped_BlockMeta, SIZE_HEX_BlockMeta);
 
@@ -1134,6 +1137,10 @@ vUDS_routine_Check_Programming_Dependancies(tCanUds *env, eUdsRoutineControlType
         return 4 + 1;
     }
 
+#if (LOG_UDS == 1)
+    LoggerFormatInfo(LOGGER, LOG_SIGN, "Update Crc: 0x%08X", *crcFromFlash)
+#endif
+
     env->dataResponse[4] = UDS_routine_RoutineStartStopSuccess;
 
     return 4 + 1;
@@ -1492,7 +1499,7 @@ static uint16_t RequestDownload_34(tCanUds *env) {
 
 
 #if (LOG_UDS == 1)
-    LoggerFormatInfo(LOGGER, LOG_SIGN, "RequestDownload: memoryAddress = %d memorySize = %d ", env->AdrFlash,
+    LoggerFormatInfo(LOGGER, LOG_SIGN, "RequestDownload: memoryAddress = %08X memorySize = %08X", env->AdrFlash,
                      env->DownloadFirmwareSize)
 #endif