On SXT devices, license stored in both nand and 25-flash chip, on boards with only one flash memory chip, license stored in flash and OTP-area of that flash chip. Any modifications of code will cause a license failure. License isn't CPU specific, i've replaced over few hundreds SoC (AR724*, AR9344-*...

So, the problem with your switch - it wants POE-up your router even when that doesn't wants it and he's so stubborn that he doesn't even listen your commands. :D Please don't shout to your router, it works fine. It just can't accept so much power, say thanks to mikrotik engineers - they implemented ...

In your first post, you didn't indicate that your modem is gigabit one. So, seems you have a problem with incompatibility of active and passive POE. May you check the voltage at this point: 1.jpg when you connect ether1 to your switch? If it exceeds 24 Volts, your router will not work. You may try t...

You connect a Gigabit POE injector, it will work like generic gigabit port device (you have an issue with that, right?), because it have own transformer to separate power and data, without any kind of "additional diodes". Try to use a 100Mbit POE injector - it uses 4 pins for data and 4 pi...

If you connect your router's ether1 port to gigabit device and it fails, but if you connect this router to 100Mbit device and it's working, it may be hardware failure. Check diode rectifiers (marked green) and especially check diode (marked red), if it fails, all power from your DC connector flows t...

If you're using Windows OS, you may try to disable all power saving features for your network device in device manager. That helped me when i had same issue.

Have You tried boot Your device with backup booter before actions with the chip? I've tried this methods: RouterBOARD reset button RouterBOOT reset button has three functions: Hold this button during boot time until LED light starts flashing, release the button to reset RouterOS configuration (tota...

Hello! First of all, sorry for my english. I have a problem with MikroTik SXT Lite5 (RB SXT5nDr2), it just a stopped working - no connection to LAN/WLAN, no beeps, no flashes, anything but power LED and three "signal" LED's. It has no reaction to "RESET" button, NETINSTALL mode d...