To get the latest firmware for your U6LR, I recommend checking the official MikroTik website:
Version 6.7.41 is the latest official firmware for the UniFi Access Point U6-LR, focusing on enhanced network self-healing and overall stability improvements. While improving performance, some users have reported issues with IoT disconnections and captive portals, leading some to consider rolling back to previous versions. For more details, visit Ubiquiti Community . UniFi Access Point for U6-LR, U6-Lite, U6+ & more u6lr latest firmware