TP-Link Archer C2600 OpenWrt 24.10.2 no 5 Ghz r28739-d9340319c6 / LuCI openwrt-24.10 branch 25.222.74622~4d26a4d

Installing and Using OpenWrt
1

TP-Link Archer C2600 OpenWrt 24.10.2 no 5 Ghz r28739-d9340319c6 / LuCI openwrt-24.10 branch 25.222.74622~4d26a4d

AC hasn#T been working for a while. I tried to get it back but don’t know how.
tried ath10k-firmware-qca99x0-ct-full-htt with no success

any ideas?

2

Install kmod-ath10k and ath10k-firmware-qca99x0 (non-ct) in place of -ct ones and try again.

3

is this related to Bug in SSID when using emoji ?

5

Thanks. OK I tried this.
I didn’t restart after de-installing but restarted after installing the non -CT

there was a message that deinstalling failer with code 255 but the -CT driver didn’t show in the list anymore as installed

still no 5gHz

6

What is in

opkg list-installed | grep ath10k
ubus call system board
lspci
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opkg list-installed | grep ath10k
ath10k-board-qca99x0 - 20241110-r2
ath10k-firmware-qca99x0 - 20241110-r2
kmod-ath10k - 6.6.93.6.12.6-r2

{
"kernel": "6.6.93",
"hostname": "router",
"system": "ARMv7 Processor rev 0 (v7l)",
"model": "TP-Link Archer C2600",
"board_name": "tplink,c2600",
"rootfs_type": "squashfs",
"release": {
"distribution": "OpenWrt",
"version": "24.10.2",
"revision": "r28739-d9340319c6",
"target": "ipq806x/generic",
"description": "OpenWrt 24.10.2 r28739-d9340319c6",
"builddate": "1750711236"
}
}

0000:00:00.0 PCI bridge: Qualcomm Technologies, Inc Device 0101
0001:00:00.0 PCI bridge: Qualcomm Technologies, Inc Device 0101
0001:01:00.0 Network controller: Qualcomm Atheros QCA9980/9990 802.11ac Wireless Network Adapter
1 Like
8

I suspect this issue https://openwrt.org/releases/24.10/notes-24.10.2#known_issues

Please do a clean 24.10.2 install and check startup log as here (logread -e ath10k) https://github.com/openwrt/openwrt/issues/14541

Add a line in the githun thread (or tell me to do so if you are not subscriber there, and I will fo it for you)

If you have a valid config backup from 23.05.5 revert to that and wait for updates in github thread

9

thanks @brada4 No, I am not member and no I don’t have a valid config for 23.05.5 but it is not the end of the world if I loose my configuration.
I will need to look it up how to do a wipe before doing a clean 24.10.2 install.
If that doesn’t work I will try the 23.05.5

thanks for your help

sysupgrade -n /path/to/firmware

umount /overlay && jffs2reset && reboot

dd if=/dev/zero of=/dev/loop0 bs=1M; reboot

probably I have to carry out those steps? should I zero loop0 first, then umount overlay and jffs2reset before installing 23.05.5 ?

BTW this is not a recent occurance, it can very well be that it happened when I upgraded to 24.XX,X

10

You do not need extra activity ro wipe overlay, it is wiped by sysupgrade optionally saving config backup tarball to survive reboot.

11 
thanks, trying to get my USB going …

Collected errors:
 * opkg_download: Failed to download https://downloads.openwrt.org/releases/24.10.2/packages/arm_cortex-a15_neon-vfpv4/base/libe2p2_1.47.0-r2_arm_cortex-a15_neon-vfpv4.ipk, wget returned 4.
 * opkg_download: Check your network settings and connectivity.

 * opkg_install_pkg: Failed to download libe2p2. Perhaps you need to run 'opkg update'?
 * opkg_install_cmd: Cannot install package e2fsprogs.

I am getting more errors today …

block: No "mount.f2fs" utility available
block: mounting /dev/sda1 (f2fs) as /mnt/sda1 failed (2) - No such file or directory
block: No "mount.ext4" utility available
block: mounting /dev/sdb1 (ext4) as /mnt/sdb1 failed (2) - No such file or directory

it’s exfat though

12

Question is about 5GHz radio - is it shown in Network/Wireless menu?

Bu default only USB port driver is installed, for sda to appear you need usb-storage driver, then filesystem driver and the mount and fsck tools for that.

13 
Flash image?
The flash image was uploaded. Below is the checksum and file size listed, compare them with the original file to ensure data integrity.
Click 'Continue' below to start the flash procedure.

Size: 8.00 MiB
MD5: 05dd87ae9d898b0387f6ce3eea7d5311
SHA256: 8dabcb84ab119e2b21a06f17fc7559b1c7c9306e7c0089202413e4c997839489
 Keep settings and retain the current configuration

 Skip from backup files that are equal to those in /rom

 Include in backup a list of current installed packages at /etc/backup/installed_packages.txt

Image check failed:

Fri Aug 22 19:59:49 UTC 2025 upgrade: The device is supported, but the config is incompatible to the new image (1.1->1.0). Please upgrade without keeping config (sysupgrade -n). Image check failed.

 Force upgrade

Select 'Force upgrade' to flash the image even if the image format check fails. Use only if you are sure that the firmware is correct and meant for your device!

Qualcomm Atheros QCA9990 802.11b/g/n
Channel: 1 (2.412 GHz) | Bitrate: 130 Mbit/s

After downgrading to

OpenWrt 23.05.6 r24232-539228933c / LuCI openwrt-23.05 branch git-25.222.75657-7ce34fe

it is the same and I only see above in the gui

after reverting to

OpenWrt 23.05.5
After updating all I still only can see Qualcomm Atheros QCA9990 802.11b/g/n

in the gui

14

Follow any updates in gh thread.

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root@OpenWrt:~# dd if=/dev/zero of=/dev/loop0 bs=1M; reboot
dd: error writing '/dev/loop0': No space left on device
1+0 records in
0+0 records out
root@OpenWrt:~#
16

thank you,
I downgraded but it still won’t show.