# Dual R3 firmware 1.5.2 the curtain turned into a mess

**URL:** <https://forum.ewelink.cc/t/dual-r3-firmware-1-5-2-the-curtain-turned-into-a-mess/24359>\
**Category:** Free discussion\
**Tags:** app, dual-r3\
**Created:** [November 13, 2023, 5:46pm UTC](https://forum.ewelink.cc/t/dual-r3-firmware-1-5-2-the-curtain-turned-into-a-mess/24359 "2023-11-13T17:46:05Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![christiansbalz](https://avatars.discourse-cdn.com/v4/letter/c/6f9a4e/32.png) [@christiansbalz](https://forum.ewelink.cc/u/christiansbalz)\
**Post date:** [November 13, 2023, 5:46pm UTC](https://forum.ewelink.cc/t/dual-r3-firmware-1-5-2-the-curtain-turned-into-a-mess/24359/1 "2023-11-13T17:46:06Z")

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It was all working perfectly until version 1.5.2 of Dual R3 arrived.

When I tell Alexa to set the curtain to x%, the curtain moves a little and then stops. I removed the device, tried to calibrate it, but without success. Calibration closes the curtain, but it doesn’t return. I can’t do manual calibration because I don’t have a switch.

This situation is complicated, everything was working fine until I updated the firmware.

And now, how do I get out of this predicament?

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**Author:** ![christiansbalz](https://avatars.discourse-cdn.com/v4/letter/c/6f9a4e/32.png) [@christiansbalz](https://forum.ewelink.cc/u/christiansbalz)\
**Post date:** [November 14, 2023, 11:37am UTC](https://forum.ewelink.cc/t/dual-r3-firmware-1-5-2-the-curtain-turned-into-a-mess/24359/2 "2023-11-14T11:37:21Z")

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Hi @Daniel_Zhan, please, any chance or possibility to roll back the firmware to the previous version?

Regards

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**Author:** ![Daniel\_Zhan](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.ewelink.cc/daniel_zhan/32/622_2.png) [@Daniel\_Zhan](https://forum.ewelink.cc/u/Daniel_Zhan)\
**Post date:** [November 16, 2023, 6:32am UTC](https://forum.ewelink.cc/t/dual-r3-firmware-1-5-2-the-curtain-turned-into-a-mess/24359/3 "2023-11-16T06:32:08Z")

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Please try to re-pair the device to see if the issue persists.

If the issue persists, please submit a ticket via our support system from the below link, our technician will help to analyze the issue.

> **[Submit a ticket](https://itead.freshdesk.com/support/tickets/new)**

Thanks.