diff --git a/libs/rteutils/include/RteUtils.h b/libs/rteutils/include/RteUtils.h
index 08c8381f7..c89fbba8a 100644
--- a/libs/rteutils/include/RteUtils.h
+++ b/libs/rteutils/include/RteUtils.h
@@ -8,7 +8,7 @@
 */
 /******************************************************************************/
 /*
- * Copyright (c) 2020-2024 Arm Limited. All rights reserved.
+ * Copyright (c) 2020-2025 Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -397,6 +397,14 @@ class RteUtils
    * @return trimmed string without whitespace characters after newline character
   */
   static std::string RemoveLeadingSpaces(const std::string& input);
+
+  /**
+   * @brief convert string characters to lower case
+   * @param input string
+   * @return string with lower case characters
+  */
+  static std::string ToLower(const std::string& input);
+
 // static constants
 public:
   static const std::string EMPTY_STRING;
diff --git a/libs/rteutils/src/RteUtils.cpp b/libs/rteutils/src/RteUtils.cpp
index 5f078f309..04e8c3b87 100644
--- a/libs/rteutils/src/RteUtils.cpp
+++ b/libs/rteutils/src/RteUtils.cpp
@@ -6,7 +6,7 @@
 */
 /******************************************************************************/
 /*
- * Copyright (c) 2020-2024 Arm Limited. All rights reserved.
+ * Copyright (c) 2020-2025 Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -621,7 +621,7 @@ void RteUtils::ApplyFilter(const vector<string>& origin, const set<string>& filt
       if (word.empty()) {
         continue;
       }
-      if (item.find(word) == string::npos) {
+      if (RteUtils::ToLower(item).find(RteUtils::ToLower(word)) == string::npos) {
         match = false;
         break;
       }
@@ -642,4 +642,11 @@ string RteUtils::RemoveLeadingSpaces(const string& input) {
   return result;
 }
 
+string RteUtils::ToLower(const string& input) {
+  string output = input;
+  std::transform(output.begin(), output.end(), output.begin(),
+    [](unsigned char c) { return std::tolower(c); });
+  return output;
+}
+
 // End of RteUtils.cpp
diff --git a/libs/rteutils/test/src/RteUtilsTest.cpp b/libs/rteutils/test/src/RteUtilsTest.cpp
index d8adf71f1..e03371b3f 100644
--- a/libs/rteutils/test/src/RteUtilsTest.cpp
+++ b/libs/rteutils/test/src/RteUtilsTest.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020-2024 Arm Limited. All rights reserved.
+ * Copyright (c) 2020-2025 Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -613,4 +613,12 @@ TEST(RteUtilsTest, RemoveLeadingSpaces) {
   EXPECT_EQ(RteUtils::RemoveLeadingSpaces("Start\n"), "Start\n");
   EXPECT_EQ(RteUtils::RemoveLeadingSpaces("Full"), "Full");
 }
+
+TEST(RteUtilsTest, ToLower) {
+  EXPECT_EQ(RteUtils::ToLower("ALL UPPER CASE"), "all upper case");
+  EXPECT_EQ(RteUtils::ToLower("all lower case"), "all lower case");
+  EXPECT_EQ(RteUtils::ToLower("Mixed Case"), "mixed case");
+  EXPECT_EQ(RteUtils::ToLower("Mixed Case And @$% Symbols_0H12AB"), "mixed case and @$% symbols_0h12ab");
+}
+
 // end of RteUtilsTest.cpp
diff --git a/tools/projmgr/src/ProjMgr.cpp b/tools/projmgr/src/ProjMgr.cpp
index c49cf7c96..73aad1caa 100644
--- a/tools/projmgr/src/ProjMgr.cpp
+++ b/tools/projmgr/src/ProjMgr.cpp
@@ -1030,7 +1030,8 @@ bool ProjMgr::RunListDebuggers(void) {
         debugger += "\n  " + alias;
       }
     }
-    if (!m_filter.empty() && debugger.find(m_filter) == string::npos) {
+    if (!m_filter.empty() &&
+      RteUtils::ToLower(debugger).find(RteUtils::ToLower(m_filter)) == string::npos) {
       continue;
     }
     debuggers.push_back(debugger);
diff --git a/tools/projmgr/src/ProjMgrWorker.cpp b/tools/projmgr/src/ProjMgrWorker.cpp
index aafe456a2..288335e33 100644
--- a/tools/projmgr/src/ProjMgrWorker.cpp
+++ b/tools/projmgr/src/ProjMgrWorker.cpp
@@ -4383,15 +4383,16 @@ std::vector<ExampleItem> ProjMgrWorker::CollectExamples(const ContextItem& conte
 }
 
 template<class T> bool ProjMgrWorker::CheckFilter(const std::string& filter, const T& item) {
-  const bool nameFound = item.name.find(filter) != string::npos;
-  const bool packFound = item.pack.find(filter) != string::npos;
-  const bool descriptionFound = m_verbose ? item.description.find(filter) != string::npos : false;
+  const string filterNoCase = RteUtils::ToLower(filter);
+  const bool nameFound = RteUtils::ToLower(item.name).find(filterNoCase) != string::npos;
+  const bool packFound = RteUtils::ToLower(item.pack).find(filterNoCase) != string::npos;
+  const bool descriptionFound = m_verbose ? RteUtils::ToLower(item.description).find(filterNoCase) != string::npos : false;
   bool boardFound = false;
   if (m_verbose) {
     for (const auto& board : item.boards) {
-      if (board.vendor.find(filter) != std::string::npos ||
-        board.name.find(filter) != std::string::npos ||
-        board.revision.find(filter) != std::string::npos) {
+      if (RteUtils::ToLower(board.vendor).find(filterNoCase) != std::string::npos ||
+        RteUtils::ToLower(board.name).find(filterNoCase) != std::string::npos ||
+        RteUtils::ToLower(board.revision).find(filterNoCase) != std::string::npos) {
         boardFound = true;
         break;
       }
diff --git a/tools/projmgr/test/src/ProjMgrUnitTests.cpp b/tools/projmgr/test/src/ProjMgrUnitTests.cpp
index c8e35a03b..0d599cbaa 100644
--- a/tools/projmgr/test/src/ProjMgrUnitTests.cpp
+++ b/tools/projmgr/test/src/ProjMgrUnitTests.cpp
@@ -488,7 +488,7 @@ TEST_F(ProjMgrUnitTests, RunProjMgr_ListBoards) {
   argv[1] = (char*)"list";
   argv[2] = (char*)"boards";
   argv[3] = (char*)"--filter";
-  argv[4] = (char*)"Dummy";
+  argv[4] = (char*)"DUMMY";
   EXPECT_EQ(0, RunProjMgr(5, argv, 0));
 
   auto outStr = streamRedirect.GetOutString();
@@ -527,7 +527,7 @@ TEST_F(ProjMgrUnitTests, RunProjMgr_ListDevices) {
   argv[1] = (char*)"list";
   argv[2] = (char*)"devices";
   argv[3] = (char*)"--filter";
-  argv[4] = (char*)"RteTest_ARMCM4";
+  argv[4] = (char*)"RTETest_ARMCM4";
   EXPECT_EQ(0, RunProjMgr(5, argv, 0));
 
   auto outStr = streamRedirect.GetOutString();
@@ -683,7 +683,7 @@ TEST_F(ProjMgrUnitTests, RunProjMgrContextSolution) {
   argv[3] = (char*)"--solution";
   argv[4] = (char*)csolution.c_str();
   argv[5] = (char*)"--filter";
-  argv[6] = (char*)"test1";
+  argv[6] = (char*)"TEST1";
   EXPECT_EQ(0, RunProjMgr(7, argv, 0));
 
   auto outStr = streamRedirect.GetOutString();
@@ -2600,7 +2600,7 @@ TEST_F(ProjMgrUnitTests, ListPacks) {
   vector<string> packs;
   EXPECT_TRUE(m_worker.ParseContextSelection({}));
   m_worker.SetLoadPacksPolicy(LoadPacksPolicy::ALL);
-  EXPECT_TRUE(m_worker.ListPacks(packs, false, "RteTest"));
+  EXPECT_TRUE(m_worker.ListPacks(packs, false, "RTETest"));
   string allPacks;
   for (auto& pack : packs) {
     allPacks += pack + "\n";
@@ -2615,7 +2615,7 @@ TEST_F(ProjMgrUnitTests, ListPacksLatest) {
   vector<string> packs;
   EXPECT_TRUE(m_worker.ParseContextSelection({}));
   m_worker.SetLoadPacksPolicy(LoadPacksPolicy::LATEST);
-  EXPECT_TRUE(m_worker.ListPacks(packs, false, "RteTest"));
+  EXPECT_TRUE(m_worker.ListPacks(packs, false, "RTETest"));
   string latestPacks;
   for (auto& pack : packs) {
     latestPacks += pack + "\n";
@@ -2631,7 +2631,7 @@ TEST_F(ProjMgrUnitTests, ListBoards) {
   };
   vector<string> devices;
   EXPECT_TRUE(m_worker.ParseContextSelection({}));
-  EXPECT_TRUE(m_worker.ListBoards(devices, "Dummy"));
+  EXPECT_TRUE(m_worker.ListBoards(devices, "DUMMY"));
   EXPECT_EQ(expected, set<string>(devices.begin(), devices.end()));
 }
 
@@ -2646,7 +2646,7 @@ TEST_F(ProjMgrUnitTests, ListDevices) {
   };
   vector<string> devices;
   EXPECT_TRUE(m_worker.ParseContextSelection({}));
-  EXPECT_TRUE(m_worker.ListDevices(devices, "CM0"));
+  EXPECT_TRUE(m_worker.ListDevices(devices, "cm0"));
   EXPECT_EQ(expected, set<string>(devices.begin(), devices.end()));
 }
 
@@ -2660,7 +2660,7 @@ TEST_F(ProjMgrUnitTests, ListDevicesPackageFiltered) {
   EXPECT_TRUE(m_parser.ParseCproject(filenameInput, false, true));
   EXPECT_TRUE(m_worker.AddContexts(m_parser, descriptor, filenameInput));
   EXPECT_TRUE(m_worker.ParseContextSelection({ "test" }));
-  EXPECT_TRUE(m_worker.ListDevices(devices, "CM3"));
+  EXPECT_TRUE(m_worker.ListDevices(devices, "cm3"));
   EXPECT_EQ(expected, set<string>(devices.begin(), devices.end()));
 }
 
@@ -2670,7 +2670,7 @@ TEST_F(ProjMgrUnitTests, ListComponents) {
   };
   vector<string> components;
   EXPECT_TRUE(m_worker.ParseContextSelection({}));
-  EXPECT_TRUE(m_worker.ListComponents(components, "Device:Startup"));
+  EXPECT_TRUE(m_worker.ListComponents(components, "DEVICE:STARTUP"));
   EXPECT_EQ(expected, set<string>(components.begin(), components.end()));
 }
 
@@ -2698,7 +2698,7 @@ TEST_F(ProjMgrUnitTests, ListDependencies) {
   EXPECT_TRUE(m_parser.ParseCproject(filenameInput, false, true));
   EXPECT_TRUE(m_worker.AddContexts(m_parser, descriptor, filenameInput));
   EXPECT_TRUE(m_worker.ParseContextSelection({ "test-dependency" }));
-  EXPECT_TRUE(m_worker.ListDependencies(dependencies, "CORE"));
+  EXPECT_TRUE(m_worker.ListDependencies(dependencies, "Core"));
   EXPECT_EQ(expected, set<string>(dependencies.begin(), dependencies.end()));
 }
 
@@ -4790,7 +4790,7 @@ TEST_F(ProjMgrUnitTests, RunProjMgr_UpdateRte) {
   string csolutionFile = testinput_folder + "/TestSolution/test.csolution.yml";
   RemoveCbuildSetFile(csolutionFile);
 
-  char* argv[9];
+  char* argv[11];
   argv[0] = (char*)"";
   argv[1] = (char*)"update-rte";
   argv[2] = (char*)csolutionFile.c_str();
@@ -4835,6 +4835,14 @@ info csolution: config files for each component:\n\
  "../TestProject1/RTE/Device/RteTest_ARMCM0/startup_ARMCM0.c@2.0.1 (update@2.0.3) from ARM::Device:Startup&RteTest Startup@2.0.3\n"\
  "../TestProject1/RTE/Device/RteTest_ARMCM0/system_ARMCM0.c@1.0.0 (up to date) from ARM::Device:Startup&RteTest Startup@2.0.3\n";
   EXPECT_EQ(outStr, expected1);
+
+  streamRedirect.ClearStringStreams();
+  argv[9] = (char*)"-f";
+  argv[10] = (char*)"DBGCONF";
+  EXPECT_EQ(0, RunProjMgr(11, argv, m_envp));
+  outStr = streamRedirect.GetOutString();
+  const string expected2 = "../.cmsis/test+CM0.dbgconf@0.0.2 (up to date)\n";
+  EXPECT_EQ(outStr, expected2);
 }
 
 TEST_F(ProjMgrUnitTests, RunProjMgr_ListConfigsWithoutInput) {
@@ -6857,7 +6865,7 @@ TEST_F(ProjMgrUnitTests, ListTargetSets) {
 
   streamRedirect.ClearStringStreams();
   argv[4] = (char*)"--filter";
-  argv[5] = (char*)"Type2";
+  argv[5] = (char*)"TYPE2";
   EXPECT_EQ(0, RunProjMgr(6, argv, 0));
 
   outStr = streamRedirect.GetOutString();
@@ -6940,7 +6948,7 @@ PreIncludeEnvFolder@1.0.0 (ARM::RteTest@0.1.0)\n\
   // test with filter option
   streamRedirect.ClearStringStreams();
   argv[6] = (char*)"--filter";
-  argv[7] = (char*)"EnvFolder";
+  argv[7] = (char*)"ENVFOLDER";
   EXPECT_EQ(0, RunProjMgr(8, argv, 0));
   outStr = streamRedirect.GetOutString();
   EXPECT_STREQ(outStr.c_str(), "\
@@ -6984,7 +6992,7 @@ Board3 (ARM::RteTest_DFP@0.2.0)\n\
 
   // test filter
   argv[3] = (char*)"--filter";
-  argv[4] = (char*)"Board1";
+  argv[4] = (char*)"BOARD1";
   streamRedirect.ClearStringStreams();
   EXPECT_EQ(0, RunProjMgr(5, argv, 0));
   outStr = streamRedirect.GetOutString();
@@ -7146,7 +7154,7 @@ Keil uVision\n\
   streamRedirect.ClearStringStreams();
   argv[3] = (char*)"--verbose";
   argv[4] = (char*)"--filter";
-  argv[5] = (char*)"CMSIS-DAP";
+  argv[5] = (char*)"Cmsis-Dap";
   EXPECT_EQ(0, RunProjMgr(6, argv, m_envp));
   outStr = streamRedirect.GetOutString();
   EXPECT_TRUE(regex_search(outStr, regex("\