Security system not working

Hello all and thanks for reading.

I recently installed an aftermarket radio in my truck, that's when the alarm no longer functioned. I had to pull the radio because it was having issues (separate incident), and put the factory one back on, but the problem persists!?. Fuses all good, red indicator light flashes, relay checked and all good. Tundra came with 2 fobs and none work. The second fob is never used so that eliminated FOB battery possibility. I even tried to do the FOB reprogram procedure and nothing. Panic button does nothing.

I opened all the windows and locked the truck with the lock button, then I reached in and manually unlocked the driver's side lock and opened the truck from the outside handle. Nothing. not even a flashing light on the dash...nothing.

Is anyone familiar with the alarm system and components and/or software issues that may trigger this behavior? I'm inclined to think that its a software issue and there's a trick procedure to do to somehow "reset" the system like open the door 10 times, jump over a horse while chewing on a cactus under 30 seconds. Anyone with any input please reply, thanks!