diff --git a/core/libs/prx/libSceHttp/Export.cpp b/core/libs/prx/libSceHttp/Export.cpp
index ef0874b74..d84ed5a4c 100644
--- a/core/libs/prx/libSceHttp/Export.cpp
+++ b/core/libs/prx/libSceHttp/Export.cpp
@@ -258,6 +258,11 @@ int APS5_VABI sceHttpUnknown01(void) {
     return 0;
 }
 
+int APS5_VABI sceHttpParseResponseHeader(void) {
+    NotImplemented_nid_no_patch(__func__);
+    return 0;
+}
+
 int APS5_VABI sceHttpCreateRequest2(int conn_id, const char* method, const char* path, uint64_t content_length) {
     (void)conn_id;
     (void)method;
diff --git a/core/libs/prx/libSceHttp2/Export.cpp b/core/libs/prx/libSceHttp2/Export.cpp
index cadaea011..911b65730 100644
--- a/core/libs/prx/libSceHttp2/Export.cpp
+++ b/core/libs/prx/libSceHttp2/Export.cpp
@@ -209,4 +209,9 @@ int APS5_VABI sceHttp2AbortRequest(int req_id) {
     return 0;
 }
 
+int APS5_VABI sceHttp2GetMemoryPoolStats() {
+    NotImplemented_nid_no_patch(__func__);
+    return 0;
+}
+
 }
diff --git a/core/libs/prx/libSceNet/Export.cpp b/core/libs/prx/libSceNet/Export.cpp
index eb0b51b35..19a4b22bd 100644
--- a/core/libs/prx/libSceNet/Export.cpp
+++ b/core/libs/prx/libSceNet/Export.cpp
@@ -650,6 +650,11 @@ int APS5_VABI sceNetEpollCreate(const char* name, int flags) {
     return id;
 }
 
+int APS5_VABI sceNetGetMemoryPoolStats() {
+    NotImplemented_nid_no_patch(__func__);
+    return 0;
+}
+
 int APS5_VABI sceNetEpollDestroy(int eid) {
     std::lock_guard<std::mutex> lk(g_mutex);
     if (g_epolls.erase(eid) == 0) {
diff --git a/core/libs/prx/libSceNpSessionSignaling/Export.cpp b/core/libs/prx/libSceNpSessionSignaling/Export.cpp
index ecdaae31b..d140181b6 100644
--- a/core/libs/prx/libSceNpSessionSignaling/Export.cpp
+++ b/core/libs/prx/libSceNpSessionSignaling/Export.cpp
@@ -74,4 +74,13 @@ int32_t APS5_VABI sceNpSessionSignalingGetLocalNetInfo(int32_t context_id, void*
  return 0;
 }
 
+int APS5_VABI sceNpSessionSignalingGetMemoryInfo(void) {
+    NotImplemented_nid_no_patch(__func__);
+    return 0;
+}
+
+int APS5_VABI sceNpSessionSignalingGetConnectionStatistics(void) {
+    NotImplemented_nid_no_patch(__func__);
+    return 0;
+}
 }
diff --git a/core/libs/prx/libSceNpTrophy2/src/Context.cpp b/core/libs/prx/libSceNpTrophy2/src/Context.cpp
index 65a97045b..097a8fe0d 100644
--- a/core/libs/prx/libSceNpTrophy2/src/Context.cpp
+++ b/core/libs/prx/libSceNpTrophy2/src/Context.cpp
@@ -30,4 +30,9 @@ int APS5_VABI sceNpTrophy2RegisterContext(int context, int handle, uint64_t opti
     return SCE_NP_TROPHY2_OK;
 }
 
+int APS5_VABI sceNpTrophy2UnregisterUnlockCallback() {
+    NotImplemented_nid_no_patch(__func__);
+    return 0;
+}
+
 }
diff --git a/core/libs/prx/libSceSystemService/Export.cpp b/core/libs/prx/libSceSystemService/Export.cpp
index 261f91556..01a6365a5 100644
--- a/core/libs/prx/libSceSystemService/Export.cpp
+++ b/core/libs/prx/libSceSystemService/Export.cpp
@@ -115,6 +115,16 @@ int APS5_VABI sceSystemServiceInitializePlayerDialogParam(void* param) {
  return SYSTEM_SERVICE_OK;
 }
 
+int APS5_VABI sceSystemServiceDisableMediaPlay() {
+ NotImplemented_nid_no_patch(__func__);
+ return 0;
+}
+
+int APS5_VABI sceSystemServiceReenableMediaPlay() {
+ NotImplemented_nid_no_patch(__func__);
+ return 0;
+}
+
 int APS5_VABI sceSystemServiceLaunchPlayerDialog(const void* param) {
  if (param == nullptr) return SYSTEM_SERVICE_ERROR_PARAMETER;
  return SYSTEM_SERVICE_OK;
diff --git a/core/libs/prx/libSceVoice/Export.cpp b/core/libs/prx/libSceVoice/Export.cpp
index 735f0697e..0f824d139 100644
--- a/core/libs/prx/libSceVoice/Export.cpp
+++ b/core/libs/prx/libSceVoice/Export.cpp
@@ -204,4 +204,9 @@ int APS5_VABI sceVoiceWriteToIPort(uint32_t input_port_id, const void* data, uin
     return 0;
 }
 
+int APS5_VABI sceVoiceSetMuteFlag() {
+    NotImplemented_nid_no_patch(__func__);
+    return 0;
+}
+
 }
diff --git a/core/libs/prx/libc/src/RuntimeSupport.cpp b/core/libs/prx/libc/src/RuntimeSupport.cpp
index ef00dd455..3fe661094 100644
--- a/core/libs/prx/libc/src/RuntimeSupport.cpp
+++ b/core/libs/prx/libc/src/RuntimeSupport.cpp
@@ -138,4 +138,9 @@ void APS5_VABI _Unlocksyslock_nid_postfix() {
     g_sysLock.unlock();
 }
 
+int APS5_VABI snwprintf_s() {
+    NotImplemented_nid_no_patch(__func__);
+    return 0;
+}
+
 }
diff --git a/docs/dev/TechnicalDebt.md b/docs/dev/TechnicalDebt.md
index 487817fec..14582ad40 100644
--- a/docs/dev/TechnicalDebt.md
+++ b/docs/dev/TechnicalDebt.md
@@ -57,6 +57,16 @@ Throughout the project, every function at every stage either **does exactly what
 - [SceAvPlayerVideoEx](../../core/libs/SceTypes.hpp) (libSceAvPlayer) - frame rate field and encoding unknown; it is left zero in frame and stream info
 - [sceAjmDecMp3ParseFrame](../../core/libs/prx/libSceAjm.native/src/Ajm.cpp) (libSceAjm.native) - signature, result layout and rate tables taken from the [shadPS4](https://github.com/shadps4-emu/shadPS4) reimplementation of the PS4 library, not confirmed on a PS5 title: the layer field is not checked and MPEG-2.5 stops at 64 kbps
 - [AJM Opus decoder](../../core/libs/prx/libSceAjm.native/src/Ajm.cpp) (libSceAjm.native, codec 24) - the initialize parameter layout (`u32 channels, u32 sample rate, u32`, seen as `2, 48000, 0`) and the little-endian `u16` byte count before each packet come from one title (The Smurfs Dreams); only 48000 Hz and a zero third word are accepted
+- [sceHttpParseResponseHeader](../../core/libs/prx/libSceHttp/Export.cpp) (libSceHttp) - unknown signature
+- [sceHttp2GetMemoryPoolStats](../../core/libs/prx/libSceHttp2/Export.cpp) (libSceHttp2) - unknown signature
+- [sceNetGetMemoryPoolStats](../../core/libs/prx/libSceNet/Export.cpp) (libSceNet) - unknown signature
+- [sceNpSessionSignalingGetMemoryInfo](../../core/libs/prx/libSceNpSessionSignaling/Export.cpp) (libSceNpSessionSignaling) - unknown signature
+- [sceNpSessionSignalingGetConnectionStatistics](../../core/libs/prx/libSceNpSessionSignaling/Export.cpp) (libSceNpSessionSignaling) - unknown signature
+- [sceNpTrophy2UnregisterUnlockCallback](../../core/libs/prx/libSceNpTrophy2/src/Context.cpp) (libSceNpTrophy2) - unknown signature
+- [sceSystemServiceDisableMediaPlay](../../core/libs/prx/libSceSystemService/Export.cpp) (libSceSystemService) - unknown signature
+- [sceSystemServiceReenableMediaPlay](../../core/libs/prx/libSceSystemService/Export.cpp) (libSceSystemService) - unknown signature
+- [sceVoiceSetMuteFlag](../../core/libs/prx/libSceVoice/Export.cpp) (libSceVoice) - unknown signature
+- [snwprintf_s](../../core/libs/prx/libc/src/RuntimeSupport.cpp) (libc) - unknown signature
 
 ### Functional