diff --git a/src/flashFormatter/C33FlashFormatter.cpp b/src/flashFormatter/C33FlashFormatter.cpp
index da57b2f..43c31a3 100644
--- a/src/flashFormatter/C33FlashFormatter.cpp
+++ b/src/flashFormatter/C33FlashFormatter.cpp
@@ -8,6 +8,7 @@
 #if defined(ARDUINO_PORTENTA_C33)
 #include "C33FlashFormatter.h"
 #define BD_ERROR_OK 0
+#include "certificates.h"
 
 C33FlashFormatter::C33FlashFormatter():
   _root(BlockDevice::get_default_instance()),
@@ -24,14 +25,11 @@ bool C33FlashFormatter::checkPartition()
     return false;
   }
 
-  if (_sys_bd.init() != BD_ERROR_OK || _sys_fs.mount(&_sys_bd) != FR_OK)
+  if(!checkCACertificatesPartition())
   {
     return false;
   }
 
-  _sys_fs.unmount();
-  _sys_bd.deinit();
-
   if (_user_bd.init() != BD_ERROR_OK)
   {
     return false;
@@ -55,14 +53,13 @@ bool C33FlashFormatter::formatPartition() {
   MBRBlockDevice::partition(_root, 2, 0x0B, 5 * 1024 * 1024, 15 * 1024 * 1024);
   MBRBlockDevice::partition(_root, 3, 0x0B, 15 * 1024 * 1024, 16 * 1024 * 1024);
 
-  int err = _sys_fs.reformat(&_sys_bd);
-  if (err) {
+  if(!flashCACertificates())
+  {
     return false;
   }
 
-  _sys_fs.unmount();
   _user_data_fs = new LittleFileSystem("user");
-  err = _user_data_fs->reformat(&_user_bd);
+  int err = _user_data_fs->reformat(&_user_bd);
   if (err) {
     return false;
   }
@@ -71,4 +68,60 @@ bool C33FlashFormatter::formatPartition() {
   return true;
 }
 
+bool C33FlashFormatter::checkCACertificatesPartition()
+{
+  /*Inspired by the CertificateUploader.ino example for Portenta C33*/
+  if (_sys_bd.init() != BD_ERROR_OK || _sys_fs.mount(&_sys_bd) != FR_OK)
+  {
+    return false;
+  }
+
+  DIR *dir;
+  struct dirent *ent;
+
+  if ((dir = opendir("/sys")) == NULL) {
+    return false;
+  }
+
+  bool foundCert = false;
+  while ((ent = readdir (dir)) != NULL) {
+    String fullname = "/sys/" + String(ent->d_name);
+    if (fullname == "/sys/cacert.pem") {
+      foundCert = true;
+      break;
+    }
+  }
+  closedir (dir);
+
+  _sys_fs.unmount();
+  _sys_bd.deinit();
+  return foundCert;
+}
+
+bool C33FlashFormatter::flashCACertificates()
+{
+  int err = _sys_fs.reformat(&_sys_bd);
+  if (err) {
+    return false;
+  }
+
+  int chunck_size = 128;
+  int byte_count = 0;
+  FILE* fp = fopen("/sys/cacert.pem", "wb");
+  while (byte_count < cacert_pem_len) {
+    if(byte_count + chunck_size > cacert_pem_len)
+      chunck_size = cacert_pem_len - byte_count;
+    int ret = fwrite(&cacert_pem[byte_count], chunck_size, 1 ,fp);
+    if (ret != 1) {
+      return false;
+    }
+    byte_count += chunck_size;
+  }
+  fclose(fp);
+
+  _sys_fs.unmount();
+
+  return true;
+}
+
 #endif
diff --git a/src/flashFormatter/C33FlashFormatter.h b/src/flashFormatter/C33FlashFormatter.h
index a13d388..a6df7ab 100644
--- a/src/flashFormatter/C33FlashFormatter.h
+++ b/src/flashFormatter/C33FlashFormatter.h
@@ -19,6 +19,8 @@ class C33FlashFormatter : public FlashFormatterClass {
   bool checkPartition() override;
   bool formatPartition() override;
 private:
+  bool checkCACertificatesPartition();
+  bool flashCACertificates();
   BlockDevice* _root;
   MBRBlockDevice _sys_bd;
   MBRBlockDevice _user_bd;
diff --git a/src/flashFormatter/H7FlashFormatter.cpp b/src/flashFormatter/H7FlashFormatter.cpp
index 005d95c..b67ac7c 100644
--- a/src/flashFormatter/H7FlashFormatter.cpp
+++ b/src/flashFormatter/H7FlashFormatter.cpp
@@ -108,18 +108,28 @@ bool MBEDH7FlashFormatter::checkWifiPartition() {
     return false;
   }
 
-  bool found = false;
+  bool foundBin = false;
   while ((ent = readdir (dir)) != NULL) {
     String fullname = "/wlan/" + String(ent->d_name);
     if (fullname == "/wlan/4343WA1.BIN") {
-      found = true;
+      foundBin = true;
+      break;
+    }
+  }
+
+  // Check if the  ca certificates file is present
+  bool foundCert = false;
+  while ((ent = readdir (dir)) != NULL) {
+    String fullname = "/wlan/" + String(ent->d_name);
+    if (fullname == "/wlan/cacert.pem") {
+      foundCert = true;
       break;
     }
   }
 
   closedir (dir);
   _wifi_data_fs.unmount();
-  return found;
+  return foundBin & foundCert;
 }
 
 bool MBEDH7FlashFormatter::formatWifiPartition() {