# Sonoff SNZB-02D update fails **URL:** \ **Category:** Ideas & Suggestion\ **Created:** [December 8, 2024, 9:21am UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372 "2024-12-08T09:21:33Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![thorben](https://avatars.discourse-cdn.com/v4/letter/t/ec9cab/32.png) [@thorben](https://forum.ewelink.cc/u/thorben)\ **Post date:** [December 8, 2024, 9:21am UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/1 "2024-12-08T09:21:33Z")
Everytime I try to update my thermostats it fails. I have tried mobile and also ewelink web. I have 1.0.9 and trying to update to 2.2.0. ---
**Author:** ![ociepa.ekotox](https://avatars.discourse-cdn.com/v4/letter/o/c68b51/32.png) [@ociepa.ekotox](https://forum.ewelink.cc/u/ociepa.ekotox)\ **Post date:** [December 8, 2024, 12:04pm UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/2 "2024-12-08T12:04:16Z")
After placing the sensor next to nspanel pro, the update started after 5 minutes. And it took a very long time. ![Screenshot_20241208_125224_eWeLink](https://europe1.discourse-cdn.com/flex005/uploads/ewelinkforum/original/2X/6/64744a0d29cbf2433aee7c3f9561b6af097ebc4f.jpeg) ![Screenshot_20241208_130630_eWeLink](https://europe1.discourse-cdn.com/flex005/uploads/ewelinkforum/original/2X/1/17d3e6d6aa5851a8e73586d5e2eb7a247535b98b.jpeg) **Update completed successfully.** ---
**Author:** ![yunusertugrul](https://avatars.discourse-cdn.com/v4/letter/y/ba8739/32.png) [@yunusertugrul](https://forum.ewelink.cc/u/yunusertugrul)\ **Post date:** [December 8, 2024, 12:25pm UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/3 "2024-12-08T12:25:45Z")
I have the same problem too. ---
**Author:** ![nbrezovec](https://avatars.discourse-cdn.com/v4/letter/n/47e85d/32.png) [@nbrezovec](https://forum.ewelink.cc/u/nbrezovec)\ **Post date:** [December 8, 2024, 12:48pm UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/4 "2024-12-08T12:48:14Z")
In iHost it says that 1.0.9 is the last firmware version! ---
**Author:** ![ociepa.ekotox](https://avatars.discourse-cdn.com/v4/letter/o/c68b51/32.png) [@ociepa.ekotox](https://forum.ewelink.cc/u/ociepa.ekotox)\ **Post date:** [December 8, 2024, 1:23pm UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/5 "2024-12-08T13:23:35Z")
> [@nbrezovec](#): > > In iHost it says that 1.0.9 is the last firmware version! Even after updating to 2.2.0 when connected to ihost. ihost still says version 1.9.0 is up to date. ---
**Author:** ![R1z0](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.ewelink.cc/r1z0/32/6708_2.png) [@R1z0](https://forum.ewelink.cc/u/R1z0)\ **Post date:** [December 8, 2024, 7:24pm UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/6 "2024-12-08T19:24:09Z")
I join the question. I have the same question, the update is being done the other day. And it’s still not finished.I have the receiver close to the Bridge and I can’t even see the update percentage.Is there a way to reset it? Or do I have to remove and re-pair the Sonoff SNZB-02D? ---
**Author:** ![yunusertugrul](https://avatars.discourse-cdn.com/v4/letter/y/ba8739/32.png) [@yunusertugrul](https://forum.ewelink.cc/u/yunusertugrul)\ **Post date:** [December 8, 2024, 10:07pm UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/7 "2024-12-08T22:07:51Z")
I removed the battery and put it back, the update was done. ---
**Author:** ![Il\_Marco](https://avatars.discourse-cdn.com/v4/letter/i/ee59a6/32.png) [@Il\_Marco](https://forum.ewelink.cc/u/Il_Marco)\ **Post date:** [December 8, 2024, 11:53pm UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/8 "2024-12-08T23:53:16Z")
Placing the sensor near my Zbridge Pro worked for me. I had three failed updates before! ---
**Author:** ![R1z0](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.ewelink.cc/r1z0/32/6708_2.png) [@R1z0](https://forum.ewelink.cc/u/R1z0)\ **Post date:** [December 11, 2024, 1:43pm UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/9 "2024-12-11T13:43:55Z")
When I removed the battery from the Sonoff SNZB-02D, the update did not start. Then I deleted the data from the application and was able to update again. The update was successful. Thank you for the advice. Together we did it. 👍 **Edit:** On the back of Sonoff SNZB-02D, just **press the button** gently and the update will be done. It may throw an error that the update failed. **Then update the firmware again** and **press the button on the back of Sonoff SNZB-02D** and the update will be done. ---
**Author:** ![theovac](https://avatars.discourse-cdn.com/v4/letter/t/958977/32.png) [@theovac](https://forum.ewelink.cc/u/theovac)\ **Post date:** [December 13, 2024, 9:21am UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/10 "2024-12-13T09:21:18Z")
same problem too ! ---
**Author:** ![evertnl47](https://avatars.discourse-cdn.com/v4/letter/e/49beb7/32.png) [@evertnl47](https://forum.ewelink.cc/u/evertnl47)\ **Post date:** [January 4, 2025, 6:51pm UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/11 "2025-01-04T18:51:26Z")
Thanks for the suggestion, moving the SNZB-02D close to the ZB Bridge helped to update the firmware of the SNZB-02D from 1.0.9 to 2.2.0. It takes a while (\>20 Min) and it drains the battery as said by others in this forum. ---
**Author:** ![fabrizio](https://avatars.discourse-cdn.com/v4/letter/f/8dc957/32.png) [@fabrizio](https://forum.ewelink.cc/u/fabrizio)\ **Post date:** [January 11, 2025, 2:05pm UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/12 "2025-01-11T14:05:41Z")
Hello, I still not solved this update problem and I successfully updated only 1 SNZB-02D on 5… the others always fails… I tried also to put them close to the bridge but it doesn’t work. I took out the battery and turn them on again… no success… ---
**Author:** ![forsts](https://avatars.discourse-cdn.com/v4/letter/f/bcef8e/32.png) [@forsts](https://forum.ewelink.cc/u/forsts)\ **Post date:** [February 12, 2025, 5:50pm UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/13 "2025-02-12T17:50:23Z")
Hello, I have the same issue, any idea? ---
**Author:** ![fabrizio](https://avatars.discourse-cdn.com/v4/letter/f/8dc957/32.png) [@fabrizio](https://forum.ewelink.cc/u/fabrizio)\ **Post date:** [February 13, 2025, 6:06am UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/14 "2025-02-13T06:06:46Z")
Hello, I’m trying to time and till now I was able to update 3 devices but I still miss other two. I have no solution… ---
**Author:** ![KolyX](https://avatars.discourse-cdn.com/v4/letter/k/ee7513/32.png) [@KolyX](https://forum.ewelink.cc/u/KolyX)\ **Post date:** [March 1, 2026, 9:47am UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/15 "2026-03-01T09:47:49Z")
Только что удалось обновить 2 устройства которые до этого никак не хотели обновляться. Обновление удалось сделать следующим образом. 1 Удалил батарейку из устройства. 2 Удалил устройство из аккаунта. 3 Запустил поиск новых устройств. 4 Вставил батарейку обратно в термометр и после этого нажал на кнопку спаривания. 5 Дождался пока в программе не появилось новое устройство и нажал добавить. 6 Имя устройства не менять!!! Сразу в раздел обновления и запустить процесс обновления. Сработало на 2х устройствах. Обновлял с 1.0.9 до 2.3.0 Процесс прошивки занимает около 20 минут и наполовину высаживает батарею в устройстве!!! Успехов. ---
**Author:** ![marcel6](https://avatars.discourse-cdn.com/v4/letter/m/dc4da7/32.png) [@marcel6](https://forum.ewelink.cc/u/marcel6)\ **Post date:** [March 1, 2026, 1:05pm UTC](https://forum.ewelink.cc/t/sonoff-snzb-02d-update-fails/101372/16 "2026-03-01T13:05:00Z")
For me it seems to be connected to Zigbee network stability. Retrying a couple times helps as well as moving devices closer. Zigbee is a slow low-power protocol, in updates this shows. Why is there No central update periodically option on the Bridge?