Installing a driver for a MT7601U Wireless Adapter?

retropieuser555 · December 26, 2020 at 5:41 PM

Hello,

I'm currently running Linux LibreELEC 4.19.127 #1 SMP Wed Jul 29 15:27:14 EDT 2020 armv7l GNU/Linux on a Raspberry pi 3B. I found the onboard wifi is a bit lacking so I brought a blank wifi usb adapter. The USB details of it are:-

LibreELEC:~ # lsusb

Bus 001 Device 005: ID 045e:028e Microsoft Corp. Xbox360 Controller

Bus 001 Device 006: ID 148f:7601 Ralink Technology, Corp. MT7601U Wireless Adapter

Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter

Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

But it doesn't seem to start or work, here is the details from dmesg

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Does anyone have any ideas how to get the named product working with the driver? It seems the name of the product is listed as Љ?

**chewitt** · December 27, 2020 at 12:22 PM Official Post

Code

mkdir -p /storage/.config/firmware/mediatek
cd /storage/.config/firmware/mediatek
wget https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/plain/mediatek/mt7601u.bin
reboot

^ SSH in and run these commands. The kernel has the MT6701U driver enabled but it complains about firmware. The error reads like it's complaining about the wrong firmware, however I can't see any sources for the firmware included in the RPi2 image so I have a hunch it's a badly written error and it's complaining about no firmware. Running the above commands should add it to an overlay folder so (on reboot) it appears to be in the right location for the driver to find it. No harm in trying..

retropieuser555 · December 27, 2020 at 3:06 PM

Thanks! I tried that but it didn't seem to do anything. So is it MT6701U or MT7610u? And it looks for the firmware in that directory? Rather than in places like lib/firmware?

**chewitt** · December 27, 2020 at 6:21 PM Official Post

Err, my bad .. MT7601U .. I updated the URL in the above post. Those folders are overlayed on /lib/firmware at boot time so that firmware appears in the correct location.

retropieuser555 · December 27, 2020 at 7:13 PM

Okay that makes sense, so I should be looking for a mt7601u.bin file? As the file doesn't exist in that URL I'm afraid (/mediatek/)

Edit: I found it in the directory before then, still didn't change anything though I'm still getting:-

Code

[  132.662752] usb 1-1.2: new high-speed USB device number 6 using dwc_otg
[  132.753751] usb 1-1.2: New USB device found, idVendor=148f, idProduct=7601, bcdDevice= 0.01
[  132.753772] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  132.753785] usb 1-1.2: Product: Љ
[  132.753798] usb 1-1.2: Manufacturer: Љ
[  132.753811] usb 1-1.2: SerialNumber: Љ
[  132.919373] usb 1-1.2: reset high-speed USB device number 6 using dwc_otg
[  133.011079] mt7601u 1-1.2:1.0: ASIC revision: 76010001 MAC revision: 76010500
[  133.026496] mt7601u 1-1.2:1.0: Firmware Version: 0.1.00 Build: 7640 Build time: 201302052146____
[  133.422671] mt7601u 1-1.2:1.0: Error: your device needs default EEPROM file and this driver doesn't support it!
[  133.423806] mt7601u: probe of 1-1.2:1.0 failed with error -22
[  133.423900] usbcore: registered new interface driver mt7601u

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**chewitt** · December 28, 2020 at 2:02 AM Official Post

Ahh, ok, it will need to be in /storage/.config/firmware then not the mediatek subfolder. We need to replicate the bad location in the upstream repo.

**mglae** · December 28, 2020 at 9:25 AM

I'm afraid you both do waste your time. The firmware is loaded successfully and the version is printed but the driver does not support devices without EEPROM (or valid EEPROM data).

**chewitt** · December 28, 2020 at 10:06 AM Official Post

mglae can you link to any upstream discussion on this?

**mglae** · December 28, 2020 at 10:49 AM

chewitt Did not look for any discussion.

The error message in the source is here. In mt7601u_init_hardware() first the firmware is loaded in mt7601u_mcu_init() and later the EEPROM is checked in mt7601u_eeprom_init().

retropieuser555 · December 28, 2020 at 11:36 AM

Ok, thanks for the explanation. This sounds to me like "buy another adapter and try that".

**chewitt** · December 28, 2020 at 11:42 AM Official Post

Driver EEPROM-Failure · Issue #37 · kuba-moo/mt7601u · GitHub <= same issue, and looks unresolved