Is there an alternative firmware for DIR-615 rev K1?

Question

Firmware

I tortured the router, and throwing away the toad strangles. Is there an alternative firmware for such a router? I dug on offsite dd-wrt and open-wrt, but there are no firmware exactly for my revision. Maybe something else exists?
And the essence of the problem, after disconnecting any client from WiFi, the connection with the provider is broken. While everything is online - it works tolerably.

Answer 1

Is it difficult to determine the type of processor and try to build openwrt yourself?

Answer 2

Firmware 1.0.14 was quite stable for it, also 1.0.18 is quite normal (a year of continuous operation), try installing one of them.
I recently installed fresh 2.5.4 , it seems to be stable, but I can’t say anything specifically about it, while I haven’t used it much.
PS
I recommend changing the power supply, a number of subscribers had problems due to a poor-quality power supply.