The last BIOS from ASUS you should install is 2103. 9901 is okay too.
I'm running 2103, and it is surprisingly compatible with GSkill 24 GB DDR5 modules... I have 48 GB RAM at 7200 XMP, paid only $240, less than half the cost of what 32 GB DDR5 RAM cost when it first came out in late 2021. It is surprising because 2103 came out in September 2022, several months before 24 GB modules came on to the market... on the AMD side, they needed updated BIOSes from 2023 to support 24 GB DDR5 modules.
I'm going to ride z690 off into the sunset with this BIOS until I either get zen 5 and/or Arrow Lake. Never updating again.
2204 works fine in terms of CPU and memory stability, but the problem is it updates the Thunderbolt firmware NVM to NVM36 which on one hand addresses hot plugging issues with JHL6240 devices, but on the other hand it ends support for TB 1 & 2 devices. The other problem is NVM36 has a bad side effect where when XMP is on and/or memory speeds exceed 5000 MT/sec, the Thunderbolt controller encounters connectivity issues (when a Thunderbolt device is physically connected) on warm reboots from the BIOS and/or resuming from sleep. I'm wondering if this is due to a SoC or Uncore voltage?
2305 and the upcoming 240x series must be avoided because they have a regression block. 240x can roll back to 2305, but 2305 cannot roll back to 2204 and below. While it is possible to overcome that block, it is not straightforward, and you may lose your serial number, UUID, and Ethernet Mac address in the process of rolling back.