I was unaware about timeliness of installing snapshots and so I bricked my device. I followed the verified installation procedure from dir-842's OpenWrt page. Everything went well until I found out that opkg had to download Luci from the internet. It did, but then when trying to install Luci, opkg informed about kernel signature mismatch and stopped. (Maybe there should be a clear warning that Luci will be downloaded directly from the internet and if not done within hours, will not be possible due to kernel signature mismatch.) Now I'm unable to estabilish connection to the device.
I also learned that there's some kind of rescue function included in many TP-Link and D-Link devices.
It seems to function the same way as in the verified procedure and I can still manage to get the power led blinking the same way by doing so, but there's no connection. (Right after the failure my computer informed about some kind of partial/limited connection, but browser, ssh or telnet wasn't able to use it.)
I tried also with 192.168.0.101 as it was suggested somewhere to be used in this situation with similar devices, but it didn't help.
Is there some specific IP to be used with this device in this situation or something else I've missed this far? (Shouldn't it be not hard-bricked as it was only Luci that failed to install? Although there possibly isn't OpenWrt anymore as I've attempted to reset it several times now by using the procedure method.)
By buying a new unit I'd most probably get installation done successfully, but if I can rescue this unit somehow, I'd rather do so. Any ideas are appreciated now.