RE305 not working after upgrade
Hello,
as a resolution of the topic https://community.tp-link.com/en/home/forum/topic/175360 I got a custom (I think) firmware made by support engineers by mail, which I uploaded to the repeater and it worked until today.
Today I noticed a new firmware available in application from TP-Link (Tether). When I tried to launch the update, I got the information that downloading failed, so I went to my PC and to repeater's web page. There, I allowed it to update and update went through - or I thought so.
Immediately after the download bar disappeared, I got error message from repeater's web server that it cannot find \ page. Similar to normal HTTP 404 message. Yet, I waited - Power LED was blinking on repeater all the time. As a strange thing I would say that the WiFi from repeater was available all that time.
After two / three hours of wait, all LED's disappeared and Power LED was still blue, no bliking. All network communication went impossible - no networking on the repeater, not even any reaction to the LAN cable connection. RESET button also does not work, regardless of how long I hold it, be it 1 second as manual says or 30 seconds. After plugging it off and on from socket, I get for a second all LEDs shining blue with exception of Status LED (which is red), but after that only Power remains stable blue.
Can I do anything about that or only warranty becomes my only hope here?

only the power LED was 'solid'. The unit was located in the kitchen downstairs from the main C7 router. Luckily the 305 was only a few months old and I was able to replace the unit for a new unit. With this new unit I upgraded the firmware with success and the unit was only 1 meter of the main C7 router.