# ameba-OTA-UI no connected client (AMB82-mini OTA device) **URL:** \ **Category:** OTA\ **Created:** [March 13, 2026, 2:26am UTC](https://forum.amebaiot.com/t/ameba-ota-ui-no-connected-client-amb82-mini-ota-device/4779 "2026-03-13T02:26:32Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![rkuo2000](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.amebaiot.com/rkuo2000/32/1105_2.png) [@rkuo2000](https://forum.amebaiot.com/u/rkuo2000)\ **Post date:** [March 13, 2026, 2:26am UTC](https://forum.amebaiot.com/t/ameba-ota-ui-no-connected-client-amb82-mini-ota-device/4779/1 "2026-03-13T02:26:32Z")
![image](https://us1.discourse-cdn.com/flex016/uploads/ameba/original/2X/8/88b231d198ab351dd4142c2b693f08e51188d9cc.png) Did I miss anything ? ---
**Author:** ![Kelvin\_Huang](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.amebaiot.com/kelvin_huang/32/2130_2.png) [@Kelvin\_Huang](https://forum.amebaiot.com/u/Kelvin_Huang)\ **Post date:** [March 16, 2026, 5:05am UTC](https://forum.amebaiot.com/t/ameba-ota-ui-no-connected-client-amb82-mini-ota-device/4779/2 "2026-03-16T05:05:09Z")
Hi @rkuo2000, May I know if AMB82 Mini have uploaded the OTA firmware and connected to the same network as the PC running the UI? Can you also check the SDK version? Thank you. ---
**Author:** ![rkuo2000](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.amebaiot.com/rkuo2000/32/1105_2.png) [@rkuo2000](https://forum.amebaiot.com/u/rkuo2000)\ **Post date:** [March 16, 2026, 9:41am UTC](https://forum.amebaiot.com/t/ameba-ota-ui-no-connected-client-amb82-mini-ota-device/4779/3 "2026-03-16T09:41:07Z")
SDK 4.1.1-build20260306 installed. I set the server ip address incorrectly, after I modified the OTA server ip address. OTA device is connected, but after I press the button to upload OTA\_NTPclient.bin, it seems not rebooting ? ![image](https://us1.discourse-cdn.com/flex016/uploads/ameba/original/2X/8/864be389edde7ad342707370904d73c77600ee8a.png) ---
**Author:** ![M-ichae-l](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.amebaiot.com/m-ichae-l/32/33_2.png) [@M-ichae-l](https://forum.amebaiot.com/u/M-ichae-l)\ **Post date:** [March 18, 2026, 7:07am UTC](https://forum.amebaiot.com/t/ameba-ota-ui-no-connected-client-amb82-mini-ota-device/4779/4 "2026-03-18T07:07:27Z")
The log shows that the bin has issue. Could you show the steps that how you create the OTA bin? thanks. Normally the OTA.bin is automatically generated after compiling. [online guide](https://ameba-doc-arduino-sdk.readthedocs-hosted.com/en/latest/ameba_pro2/amb82-mini/Example_Guides/OTA/Ameba%20Over-the-Air%20Firmware%20Update.html) `Note: There is a hidden check value called timestamp The OTA firmware must be newer than the currently running firmware; otherwise, the OTA process will fail and roll back to the original firmware.` ---
**Author:** ![rkuo2000](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.amebaiot.com/rkuo2000/32/1105_2.png) [@rkuo2000](https://forum.amebaiot.com/u/rkuo2000)\ **Post date:** [March 18, 2026, 10:09am UTC](https://forum.amebaiot.com/t/ameba-ota-ui-no-connected-client-amb82-mini-ota-device/4779/5 "2026-03-18T10:09:57Z")
I think I pick the wrong .bin to upload. But after I upload ota.bin, the following message don’t look like it is running, nor if I press reset ![image](https://us1.discourse-cdn.com/flex016/uploads/ameba/original/2X/3/3fab00e2c8b2d5b6901c29d6cf5069aaa612a625.png) ---
**Author:** ![M-ichae-l](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.amebaiot.com/m-ichae-l/32/33_2.png) [@M-ichae-l](https://forum.amebaiot.com/u/M-ichae-l)\ **Post date:** [March 19, 2026, 2:44am UTC](https://forum.amebaiot.com/t/ameba-ota-ui-no-connected-client-amb82-mini-ota-device/4779/6 "2026-03-19T02:44:43Z")
```auto #include "OTA.h" #include "WiFi.h" char ssid[] = "Network_SSID5"; // your network SSID (name) char pass[] = "Password"; // your network password int status = WL_IDLE_STATUS; int port = 3000; // your server port number char* server = "192.168.3.14"; // your server ip address OTA ota; void setup() { Serial.begin(115200); // Connection to internet while (status != WL_CONNECTED) { Serial.print("Attempting to connect to WPA SSID: "); Serial.println(ssid); status = WiFi.begin(ssid, pass); delay(2000); } // Set up the threads ota.start_OTA_threads(port, server); } void loop() { // Empty or add non-blocking code here } ``` the OTA demo is simple, please help me to check following points when compiling the bin, - arduino ide menu, select OTA enable - arduino ide menu, select NN load from SD card - server, check the server device IP - coding, need to setup wifi ssid and password, must be same network as server device - ```auto char ssid[] = "Network_SSID5"; // your network SSID (name) char pass[] = "Password"; // your network password ``` - coding, need to setup the server IP - `char* server = “192.168.3.14”;` - coding, need to setup OTA - ```auto // Set up the threads ota.start_OTA_threads(port, server); ``` The following note is also important when doing OTA testing. `Note: There is a hidden check value called timestamp The OTA firmware must be newer than the currently running firmware; otherwise, the OTA process will fail and roll back to the original firmware.` ---
**Author:** ![rkuo2000](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.amebaiot.com/rkuo2000/32/1105_2.png) [@rkuo2000](https://forum.amebaiot.com/u/rkuo2000)\ **Post date:** [March 20, 2026, 10:21am UTC](https://forum.amebaiot.com/t/ameba-ota-ui-no-connected-client-amb82-mini-ota-device/4779/7 "2026-03-20T10:21:08Z")
It works now I probably copied an older ota.bin for UI, so it is out-of-date. Thanks ! Richard Michael Zhang \<[notifications@ameba.discoursemail.com](mailto:notifications@ameba.discoursemail.com)\> 於 2026年3月19日週四 上午10:54寫道：