My WE1026-16M was bricked by my mistake 
Last version of the OpenWRT was 19.07.9 zbt-we826-16M. It was worked.
The same version is currently on WE-866. It works fine with modem Quectel EP06 (include GNSS receiver), but not with Huawei ME909s-120.
I also have WE1026-5g-WD. It works with OpenWRT
23.05.5 zbt-we1026-5g-16m
and
21.02.7 zbt-we1026-5g-16m
with both Quectel and Huawei modems. But for the Huawei modem needs to fix one configuration file by hand.
Spocibo. Actually, my idea is a "very dirty" hack, to edit
./target/linux/ramips/dts/mt7620a_zbtlink_zbt-we1026-h-32m.dts
reg = <0x50000 0x1fb0000>; -> reg = <0x50000 0xfb0000>;
and then build image for the we1026-h-32m, from source .
This should work for 23.05.5.
I used the Huawei modem in the past, but because of supply issues, changed to Quectel, EC25 in different variants for various geographical areas. Fast (and stable) enough for my apps.
Update:
Probably also need to delete following lines from dts(32MB):
&flash0 {
broken-flash-reset;
};
Let me know if it works out.