I'll try get back to helping, took on a new role at work and it's been insanely busy.
It's a shame that a lot of the blockers getting the ipq patches into mainline is lack of information from qca, however we could always submit updated versions documented with what we have found. It may be enough to get some of the changes in (or at least worth a shot)
Great, well currently the biggest obstacle even when we have something working is upstreaming as QCA maintainers are so slow that it takes months for somebody to look at the patch
you cannot run ubiformat on both mtd12 and mtd13 while the router is running since one of them is running the os. this is the error that I've got: ubiformat: error!: please, first detach mtd13 (/dev/mtd13) from ubi0
about sysupgrade: xiaomi made some changes on their sysupgrade command and it recognizes that the openwrt's firmware isn't correct and refusing to continue with the process.
Probably the 1st point would not affect a router that booted from tftp, but this will require a serial connection.
You can do this while the system is running but you need to reboot into the other root partition.
For future readers, check your actual partition numbers before formatting just in case: cat /proc/mtd and search for root_fs and root_fs1 or something like that.
About 12 hours after using my router as AP the wifi crashed and not available anymore.
my config: about 6 wifi clients, and 1 ethernet client (beside the WAN)
before rebooting my router there is any logs that you want me to provide?
I run now 2 Xiaomi AX3600 Routers together, one as dumb AP. I've setup 2 Wifi networks per Router, all with same SSID and Fast Transition activated, one 2.4 GHz and the other one 5Ghz (Qualcomm Atheros QCA9887 802.11nac). It works now since almost 12h stable with around 38 clients.
I tried to connect my FTDI adapter to a raspberry pi next to the router in order to investigate in case of wifi crashed (my pc is connect wirelessly).
Although the same adapter works fine with my PC, when I attach the adapter to the rpi it blocks the router from rebooting (just hangs until I disconnect the UART).
UPDATE: I tried to access from my PC again (like I did a few days ago) and the router hangs again and refuses to boot (the orange led doesn't even turn on) until I disconnect the adapter. any ideas?