[Bug]: Sonoff MINI-ZBRBS fails to move shutter after firmware update to v1.1.0 (v1.0.5 works)

After updating the firmware of my Sonoff MINI-ZBRBS (Roller Shutter Module) to 1.1.0 (https://github.com/Koenkk/zigbee-OTA/pull/989), the device no longer responds correctly to "Open/Close" commands or physical switch inputs.

When triggered, the internal relay clicks twice, but the motor does not move. In Zigbee2MQTT, the state immediately jumps from 0% to 100% (or vice versa). Interestingly, controlling the device via the percentage/position slider still works.

Actual Behavior

• Physical Switch: Relay clicks twice, no movement.
• Z2M Open/Close Buttons: Relay clicks twice, state jumps instantly to 0/100%, no movement.
• Position Slider: Works as expected.

Expected Behavior
The motor should move to the fully open or closed position when the command is sent, and the relay should stay engaged until the end position is reached.

Environment

• Device: Sonoff MINI-ZBRBS (Roller Shutter Module)
• Zigbee2MQTT version: 2.7.2
• Firmware version (Broken): 1.1.0
• Firmware version (Working): 1.0.5 (I have other units on this version that work perfectly)

Additional Context
It seems like the update corrupted the calibration or end-stop detection. Since my other devices on version 1.0.5 do not show this behavior, I am looking for a way to downgrade or a fix for the current firmware. Does anyone have the OTA/Firmware file for v1.0.5?

Start with zigbee-OTA PR #989 and the Sonoff MINI-ZBRBS firmware versions 1.1.0 and 1.0.5. Reproduce the physical-switch and Open/Close behavior while checking the position-slider behavior, then determine whether the OTA artifact or calibration/end-stop handling differs. Done means restoring reliable full open/close movement or providing a confirmed downgrade path to 1.0.5.