3.8.4

v3.4.4 Fix for new installations with filesystem not initializing

CHANGELOG.md

@@ -5,6 +5,43 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.8.4] 4 August 2026
+
+## Fixed
+
+- Allow auto-download and install of firmware versions which are smaller to allow update to the latest 3.9.0-development version.
+
+## [3.8.3] 1 August 2026
+
+## Added
+
+- KM300 at address 0x4A [#3084](https://github.com/emsesp/EMS-ESP32/issues/3084)
+
+## Fixed
+
+- signed value for solarInfuence [#3077](https://github.com/emsesp/EMS-ESP32/issues/3077)
+- set bin file upload limit to 1M again [#3086](https://github.com/emsesp/EMS-ESP32/issues/3086)
+- check arithmetric operations on strings [#3127](https://github.com/emsesp/EMS-ESP32/discussions/3127)
+- prevent system crash during WiFi network discovery on ESP32-S3 hardware [#3128](https://github.com/emsesp/EMS-ESP32/pull/3128)
+- fix setting date/time on Junkers thermostats
+- offset of hpminflowtemp [#3144](https://github.com/emsesp/EMS-ESP32/issues/3144)
+- water circulation command [#3149](https://github.com/emsesp/EMS-ESP32/pull/3149)
+- start scheduler after customEntities, delay scheduler loop after startup, handling of `system/restart` command [#3146](https://github.com/emsesp/EMS-ESP32/issues/3146)
+- possible memory leaks fixed.
+- repeated startup schedules compute value
+- call `system/message` called from scheduler processes compute twice
+- water module SM100/200 as dhw1/dhw2 [#3164](https://github.com/emsesp/EMS-ESP32/issues/3164)
+
+## Changed
+
+- call compute value direct, enlarge TCP stack [#3127](https://github.com/emsesp/EMS-ESP32/discussions/3127)
+- Dewtemperature for Easycontrol calculated by ems-esp [#3135](https://github.com/emsesp/EMS-ESP32/issues/3135)
+- add option for sync thermostat to ntp, allow different time zones [#3148](https://github.com/emsesp/EMS-ESP32/discussions/3148), **defaults to sync**.
+- block too many GET requests [mentioned in #3104](https://github.com/emsesp/EMS-ESP32/issues/3104)
+- set 10 sec timeout for http requests [#3104](https://github.com/emsesp/EMS-ESP32/issues/3104)
+- language code "cs" [#3161](https://github.com/emsesp/EMS-ESP32/issues/3161)
+
+
 ## [3.8.2] 12 May 2026
 
 ## Added
@@ -71,7 +108,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - board profile `CUSTOM` can only be selected in developer mode
 - mqtt sends round values without decimals (`28` instead of `28.0`)
 
-
 ## [3.8.0] 31 December 2025
 
 ## Added

CHANGELOG_LATEST.md

@@ -1,33 +1,3 @@
 # Changelog
 
 For more details go to [emsesp.org](https://emsesp.org/).
-
-## [3.8.3]
-
-## Added
-
-- KM300 at address 0x4A [#3084](https://github.com/emsesp/EMS-ESP32/issues/3084)
-
-## Fixed
-
-- signed value for solarInfuence [#3077](https://github.com/emsesp/EMS-ESP32/issues/3077)
-- set bin file upload limit to 1M again [#3086](https://github.com/emsesp/EMS-ESP32/issues/3086)
-- check arithmetric operations on strings [#3127](https://github.com/emsesp/EMS-ESP32/discussions/3127)
-- prevent system crash during WiFi network discovery on ESP32-S3 hardware [#3128](https://github.com/emsesp/EMS-ESP32/pull/3128)
-- fix setting date/time on Junkers thermostats
-- offset of hpminflowtemp [#3144](https://github.com/emsesp/EMS-ESP32/issues/3144)
-- water circulation command [#3149](https://github.com/emsesp/EMS-ESP32/pull/3149)
-- start scheduler after customEntities, delay scheduler loop after startup, handling of `system/restart` command [#3146](https://github.com/emsesp/EMS-ESP32/issues/3146)
-- possible memory leaks fixed.
-- repeated startup schedules compute value
-- call `system/message` called from scheduler processes compute twice
-- water module SM100/200 as dhw1/dhw2 [#3164](https://github.com/emsesp/EMS-ESP32/issues/3164)
-
-## Changed
-
-- call compute value direct, enlarge TCP stack [#3127](https://github.com/emsesp/EMS-ESP32/discussions/3127)
-- Dewtemperature for Easycontrol calculated by ems-esp [#3135](https://github.com/emsesp/EMS-ESP32/issues/3135)
-- add option for sync thermostat to ntp, allow different time zones [#3148](https://github.com/emsesp/EMS-ESP32/discussions/3148), **defaults to sync**.
-- block too many GET requests [mentioned in #3104](https://github.com/emsesp/EMS-ESP32/issues/3104)
-- set 10 sec timeout for http requests [#3104](https://github.com/emsesp/EMS-ESP32/issues/3104)
-- language code "cs" [#3161](https://github.com/emsesp/EMS-ESP32/issues/3161)

interface/package.json

@@ -52,8 +52,8 @@
     "@preact/compat": "^18.3.2",
     "@preact/preset-vite": "^2.10.5",
     "@trivago/prettier-plugin-sort-imports": "^6.0.2",
-    "@types/node": "^25.9.5",
+    "@types/node": "^25.7.0",
-    "@types/react": "^19.2.17",
+    "@types/react": "^19.2.14",
     "@types/react-dom": "^19.2.3",
     "axe-core": "^4.12.1",
     "concurrently": "^9.2.4",
@@ -61,9 +61,9 @@
     "eslint-config-prettier": "^10.1.8",
     "prettier": "^3.9.5",
     "rollup-plugin-visualizer": "^7.0.1",
-    "terser": "^5.49.0",
+    "terser": "^5.47.1",
-    "typescript-eslint": "^8.63.0",
+    "typescript-eslint": "^8.59.3",
-    "vite": "^8.1.4",
+    "vite": "^8.0.12",
     "vite-plugin-imagemin": "^0.6.1",
     "vite-tsconfig-paths": "^6.1.1"
   },

mock-api/package.json

@@ -2,6 +2,7 @@
   "name": "mock-api",
   "version": "3.8.2",
   "description": "mock api for EMS-ESP",
+  "type": "module",
   "author": "proddy, emsesp.org",
   "license": "MIT",
   "scripts": {

src/core/system.cpp

@@ -3024,18 +3024,24 @@ bool System::uploadFirmwareURL(const char * url) {
         return false; // error
     }
 
+    // the Content-Length from the response header, -1 if the server didn't send one.
     int firmware_size = http.getSize();
+    if (firmware_size <= 0) {
+        LOG_ERROR("Firmware upload failed - unknown size");
+        http.end();
+        return false; // error
+    }
 
-    // check we have a valid size
+    // catch a wrong URL early, before streaming. Smallest shipped image is ~1.9MB
-    if (firmware_size < 2097152) { // 2MB or greater is required
+    if (firmware_size < 1677721) { // 1.6MB
-        LOG_ERROR("Firmware upload failed - invalid size");
+        LOG_ERROR("Firmware upload failed - too small (%d KB)", firmware_size / 1024);
         http.end();
         return false; // error
     }
 
     // check we have enough space for the upload in the ota partition
     if (!Update.begin(firmware_size)) {
-        LOG_ERROR("Firmware upload failed - no space");
+        LOG_ERROR("Firmware upload failed - %s", Update.errorString());
         http.end();
         return false; // error
     }
@@ -3052,7 +3058,7 @@ bool System::uploadFirmwareURL(const char * url) {
 
     // get tcp stream and send it to Updater
     WiFiClient * stream = http.getStreamPtr();
-    if (Update.writeStream(*stream) != firmware_size) {
+    if (Update.writeStream(*stream) != (size_t)firmware_size) {
         LOG_ERROR("Firmware upload failed - size differences");
         http.end();
         EMSESP::system_.systemStatus(SYSTEM_STATUS::SYSTEM_STATUS_ERROR_UPLOAD);

src/emsesp_version.h

@@ -1 +1 @@
-#define EMSESP_APP_VERSION "3.8.3-dev.11"
+#define EMSESP_APP_VERSION "3.8.4"

test/test_api/test_api.h

@@ -588,4 +588,4 @@ void run_tests() {
     RUN_TEST(test_57);
 }
 
-// ---------- END - CUT HERE ----------
+// ---------- END - CUT HERE ----------