Thanks for sharing the link to the firmware here, l also received the update on the Leaf 2.
Build Number: 2023-04-20_11-32_3.3.2_9916cdce0
Link:
http://firmware-us-volc.boox.com/30a...e51/update.upx
MD5: 30AD15B82F44A237A20AB7D67D752E51 (as in the URL)
Same as Renate stated above, you need to copy paste the link.