Hello,
is there a possibility to export all packages that have been added while running make menuconfig? I recompiled my openWRT but it now lacks 5GHz and I suppose i might be missing packages?
I did not save the binary but I have another Accesspoint that runs a working openWRT. If there is a possibility to exctract the firmware I was fine with that, too.
Hi
maybe you could SSH into working router and from there
lsmod -l
cfg80211 508781 5 mt76x2_common,mt76x02_lib,mt7603e,mt76,mac80211
cmac 2642 0
compat 1307 2 mac80211,cfg80211,[permanent]
drbg 17586 0
gpio_button_hotplug 6770 0
hmac 2674 0
jitterentropy_rng 7657 0
leds_gpio 3346 0
libsha256 8868 1 sha256_generic
mac80211 690412 4 mt76x2e,mt76x02_lib,mt7603e,mt76
mt76 51387 4 mt76x2e,mt76x2_common,mt76x02_lib,mt7603e
mt7603e 40380 0
mt76x02_lib 46311 2 mt76x2e,mt76x2_common
mt76x2_common 12674 1 mt76x2e
mt76x2e 10593 0
mtd_rw 1154 0
seqiv 1778 0
sha256_generic 2653 0
to list which modules are loaded
it may give you a clue 
WiFi support is usually enabled based on the device, so it's easy to look it up based on the model of the hardware. Which device are we talking about?