Lost connection to SFP module

Hi, I'm sorry for posting this. This problem may not be connected to OpenWRT itself, it may be hardware problem. But I can't find any solution, so... maybe you can help?

I have BPI-R3 router and have OpenWRT running on it. I bought DFP-34X-2C2 sfp-module recently. I connected it to router without problems, got internet connection (I use EPON connection type).

But then I changed LAN_SDS_MODE to 4 (default was 3) on sfp module.
https://github.com/Anime4000/RTL960x/blob/main/Docs/FLASH_GETSET_INFO.md#lan_sds_mode
After this sfp module "disappeared". I can't connect to it anymore.

Checked ethtool. Here is output (eth1 is device, where sfp-module connected):
249265222-faa0ded2-1535-4ed0-a23f-e2676c0d2897

From log:

Tue Jun 27 23:13:37 2023 kern.info kernel: [ 24.870354] mtk_soc_eth 15100000.ethernet eth1: Link is Up - 2.5Gbps/Full - flow control off

Tue Jun 27 23:13:37 2023 daemon.notice netifd: Network device ‘eth1’ link is up

Also no Rx on eth1:
29f4199faef976f3d2c7fe4df4c5c9280af8624f

Can I do something to make sfp-module visible? Or UART to sfp is an only option now?

Though I don't believe this is specifically OpenWrt related, have you tried flashing it back to 3?

This topic was automatically closed 10 days after the last reply. New replies are no longer allowed.