IKEA FW rollback

I am having isues with some IKEA bulbs being “slippy”. That is, they will drop the route/association with battery powered devices after about 5 minutes. Thus the devices needs to spend 15-10s to re-associate with the network on wakeup.
LED2003/LED2004 are badm, and I suspect LED2103 are as well.

I know that firmware 1.0.36 is bad on my LED2103G5, sohow do I rollback to test 1.0.25 ?

Or more specifically, how do I know what firmware file from version_info.json is picked for the bulb ? Then I can likely change the URL to point to an old firmware. Is there something in Zigbee2mqtt console I can use to identify the right firmware ?