I tried installing shibby tomato (tomato-RT-AC56U-ARM--120-AIO-64K.trx) on my AC56U using this guide After putting the router into recovery mode (by using the buttons at start-up) and uploading the .trx with the ASUS Firmware Restoration utility, the installation began fine, judging by the lights. After some minutes though it got stuck with just the power light still shining. When I then reset the router, no lights other than the power light would light up and I couldn't put it into recovery mode either. I bought a serial cable and got into the CFE prompt using putty as instructed by an internet tutorial, but issuing "nvram erase" and "nvram commit" didn't change much. I still can't get the router into recovery mode using the buttons. I have serial access to the CFE, and I can also get into some sort of linux environment running on the router by pressing enter in putty after I let the router load up for some minutes. Should I perhaps try using the firmware update command available in the CFE and try to install the same .trx again through aftp or something? I have no experience with routers, so I could use some advice before I try anything just to avoid bricking the router even further.