No ping. Dead router

I have got Asus WL-500W.
I tried to change native firmware to dd-wrt (dd-wrt.v24_mega_generic.bin)
First of all, I changed network setting of my PC: ip-192.168.1.10, mask-255.255.255.0, gateway/dns - 192.168.1.1

What I did:

Code:

30/30/30 tftp -i 192.168.1.1 put C:\wl500g-clear-nvram.trx wait 3 minutes 30/30/30 tftp -i 192.168.1.1 put C:\wl500g-recover.trx wait 3 minutes 30/30/30 tftp -i 192.168.1.1 put C:\dd-wrt.v24_mini_asus.trx wait 3 minutes 30/30/30

And my settings of native firmware were reseted, but there was no dd-wrt firmware.
I tryed to repeat the procedure, but it was the same result.
So then I did:

Code:

30/30/30 ASUS Utility\Firmware Restoration and choose "dd-wrt.v24_mini_asus.trx" firmware.

On the web-admin it was dd-wrt firmware, I changed username and password and upgraded dd-wrt.v24_mini_asus.trx to dd-wrt.v24_mega_generic.bin from web-admin.

But now it doesn`t ping, AIR (Wi-Fi) doesn`t work, and web-admin doesn`t work too.

I have read a lot of topics on the forum, so what I tryed to do:

FIRST - Reset by Reset button
1. unplug power cable
2. hold restore button for 30 seconds
3. release restore button
4. plug power cable
Result: Power indicator was blinking, but after I had connected lan-cable, Power indicator stopped blinking. lan indicator was lighted, but there was no ping, after 30 second lan indicator stopped to light, Asus Firmware Restoration didn`t find any devices.

SECOND - Reset by Reset button
1. unplug power cable
2. hold restore button for 30 seconds
3. plug power cable
4. release restore button after 10 seconds.
Result: Power indicator was blinking, but after I had connected lan-cable, Power indicator stopped lighting, lan indicator was lighted, but there was no ping, Asus Firmware Restoration didn`t find any devices.

THIRD - Reset by EZSETUP button
1. unplug power cable
2. hold EZSETUP button for 1 second.
3. plug power cable
4. after 5 seconds release EZSETUP button.
Result: Power indicator was blinking, but after I had connected lan-cable, Power indicator stopped lighting, lan indicator was lighted, but there was no ping, Asus Firmware Restoration didn`t find any devices.

Fourth - - Reset by EZSETUP button and Reset button
1. unplug power cable
2. hold EZSETUP button for 1 second.
3. plug power cable
4. after 5 seconds release EZSETUP button.
5. unplug power cable
6. hold restore button for 10 seconds
7. plug power cable
8. release restore button after 10 seconds.
Result: Power indicator was blinking, but after I had connected lan-cable, Power indicator stopped lighting, lan indicator was lighted, but there was no ping, Asus Firmware Restoration didn`t find any devices.

Fifth - 30/30/30
1. hold RESET button.
2. after 30 second unplug power cable without releasing RESET button
3. after 30 second plug power cable releasing RESET button
4. wait for 30 second releasing RESET button
Result: Power indicator was blinking, but after I had connected lan-cable, Power indicator stopped lighting, lan indicator was lighted, but there was no ping, Asus Firmware Restoration didn`t find any devices.

Help me, please!