diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f2785810..47519072a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,9 @@ All notable changes to this project will be documented in this file.
 ### Fixed
 - NTP fallback server functionality (#9739)
 
+### Removed
+- Version compatibility check
+
 ## [Released]
 
 ### 9.1.0 20201105
diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 962432de8..35e23d22b 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -68,3 +68,6 @@ The attached binaries can also be downloaded from http://ota.tasmota.com/tasmota
 
 ### Fixed
 - NTP fallback server functionality (#9739)
+
+### Removed
+- Version compatibility check
diff --git a/tasmota/settings.ino b/tasmota/settings.ino
index 0bf23a3c0..18711b5fc 100644
--- a/tasmota/settings.ino
+++ b/tasmota/settings.ino
@@ -213,57 +213,6 @@ void SetFlashModeDout(void)
 #endif  // ESP8266
 }
 
-bool VersionCompatible(void)
-{
-#ifdef ESP8266
-
-  if (Settings.flag3.compatibility_check) {
-    return true;
-  }
-
-  eboot_command ebcmd;
-  eboot_command_read(&ebcmd);
-  uint32_t start_address = ebcmd.args[0];
-  uint32_t end_address = start_address + (ebcmd.args[2] & 0xFFFFF000) + FLASH_SECTOR_SIZE;
-  uint32_t* buffer = new uint32_t[FLASH_SECTOR_SIZE / 4];
-
-  uint32_t version[3] = { 0 };
-  bool found = false;
-  for (uint32_t address = start_address; address < end_address; address = address + FLASH_SECTOR_SIZE) {
-    ESP.flashRead(address, (uint32_t*)buffer, FLASH_SECTOR_SIZE);
-    if ((address == start_address) && (0x1F == (buffer[0] & 0xFF))) {
-      version[1] = 0xFFFFFFFF;  // Ota file is gzipped and can not be checked for compatibility
-      found = true;
-    } else {
-      for (uint32_t i = 0; i < (FLASH_SECTOR_SIZE / 4); i++) {
-        version[0] = version[1];
-        version[1] = version[2];
-        version[2] = buffer[i];
-        if ((MARKER_START == version[0]) && (MARKER_END == version[2])) {
-          found = true;
-          break;
-        }
-      }
-    }
-    if (found) { break; }
-  }
-  delete[] buffer;
-
-  if (!found) { version[1] = 0; }
-
-  AddLog_P(LOG_LEVEL_DEBUG, PSTR("OTA: Version 0x%08X, Compatible 0x%08X"), version[1], VERSION_COMPATIBLE);
-
-  if (version[1] < VERSION_COMPATIBLE) {
-    uint32_t eboot_magic = 0;  // Abandon OTA result
-    ESP.rtcUserMemoryWrite(0, (uint32_t*)&eboot_magic, sizeof(eboot_magic));
-    return false;
-  }
-
-#endif  // ESP8266
-
-  return true;
-}
-
 void SettingsBufferFree(void)
 {
   if (settings_buffer != nullptr) {
diff --git a/tasmota/support_tasmota.ino b/tasmota/support_tasmota.ino
index e2604ba14..b62c19b39 100644
--- a/tasmota/support_tasmota.ino
+++ b/tasmota/support_tasmota.ino
@@ -1066,12 +1066,8 @@ void Every250mSeconds(void)
         Response_P(PSTR("{\"" D_CMND_UPGRADE "\":\""));
         if (ota_result) {
 //          SetFlashModeDout();      // Force DOUT for both ESP8266 and ESP8285
-          if (!VersionCompatible()) {
-            ResponseAppend_P(PSTR(D_JSON_FAILED " " D_UPLOAD_ERR_14));
-          } else {
-            ResponseAppend_P(PSTR(D_JSON_SUCCESSFUL ". " D_JSON_RESTARTING));
-            TasmotaGlobal.restart_flag = 2;
-          }
+          ResponseAppend_P(PSTR(D_JSON_SUCCESSFUL ". " D_JSON_RESTARTING));
+          TasmotaGlobal.restart_flag = 2;
         } else {
           ResponseAppend_P(PSTR(D_JSON_FAILED " %s"), ESPhttpUpdate.getLastErrorString().c_str());
         }
diff --git a/tasmota/xdrv_01_webserver.ino b/tasmota/xdrv_01_webserver.ino
index bc430f626..d567215d5 100644
--- a/tasmota/xdrv_01_webserver.ino
+++ b/tasmota/xdrv_01_webserver.ino
@@ -796,7 +796,6 @@ const char kUploadErrors[] PROGMEM =
 #ifdef USE_RF_FLASH
   "|" D_UPLOAD_ERR_10 "|" D_UPLOAD_ERR_11 "|" D_UPLOAD_ERR_12 "|" D_UPLOAD_ERR_13
 #endif
-  "|" D_UPLOAD_ERR_14
   ;
 
 const uint16_t DNS_PORT = 53;
@@ -2689,8 +2688,7 @@ void HandleUploadDone(void)
 #ifdef USE_RF_FLASH
     if (Web.upload_error < 15) {
 #else
-    if ((Web.upload_error < 10) || (14 == Web.upload_error)) {
-      if (14 == Web.upload_error) { Web.upload_error = 10; }
+    if (Web.upload_error < 10) {
 #endif
       GetTextIndexed(error, sizeof(error), Web.upload_error -1, kUploadErrors);
     } else {
@@ -2978,10 +2976,6 @@ void HandleUploadLoop(void)
         Web.upload_error = 6;  // Upload failed. Enable logging 3
         return;
       }
-      if (!VersionCompatible()) {
-        Web.upload_error = 14;  // Not compatible
-        return;
-      }
     }
     if (!Web.upload_error) {
       AddLog_P(LOG_LEVEL_INFO, PSTR(D_LOG_UPLOAD D_SUCCESSFUL " %u bytes"), upload.totalSize);