(I waited to update for a while because there was discussion going on.)
You decide to upgrade the sensors, only to run into a problem: the sensors are outside of the sealed room. That is not a problem: you program the nanobot dispenser to disassemble part of the wall. As soon as the last micrometer is reached, the sensors detect a slight vibration that then stops. Looks like there was air here that just vented into the void-- but that's not a big deal, since you are a being of silicon and electrons, not flesh and blood. Millions of nanobots got carried away by the current, to be lost forever, but that's not a big deal either.
The remaining nanobots, their endless microscopic hordes replenished, being to work on improving the sensors' sensitivity and resolution by adding a small dish that can swivel.
While the upgrades, which take about two weeks given your current nanobot production and command capacity, are going on, you decide to read the attached technical manual, for ideas. You absorb the complicated formulae and descriptions of exotic phenomena, as well as a few example blueprints... and get the following ideas:
1) Perhaps you might want to improve your nanofabricator, for if something time-critical happens...
2) Your energy will eventually run out given the small size of the blackbox, if there are any sources within the void, you might want to seek them out.
3) Your current and upgraded sensors have limited penetration through the kind of rock this asteroid seems to be composed of. Exploration of anything that may be hidden there will require mining.
4) Your computing power, while large, is not enough to comprehend more currently. Upgrade to access more hints.
Then, the upgrade concludes, using the disassembled wall material.


The dish sweeps across the void. There is the faintest hint of some kind of mostly infrared radiation, a point a massive distance away, but the rest of space is still black as ever, with no detectable radiation.
What now?Default room
- Thin steel walls (breached)
- Small AI Core (that is you) with tech info SSD attached
- Tier 1 Nanofabricator
- Tier 2 Sensors
- Hyperconductor Blackbox