Is there any way or not? I didnt know i cant upgrade and I build really useful T1 and now my only option is to kill him and build new T4 and try my luck?

Ok you can't uprgrade tiers. The best way is just wait to research T4 and then start ti build them.

I guess we could delve into our save file, find the appropriate part and change the pawn race that way?

You guy prolly dont care anymore but use the skynet

Yeah if there are other people asking this question, it can be done. If connected to skymind, an android can be uploaded into another android. If the android is simple minded (T1 or T2) and is uploaded into an android that is not simple minded (T3 - T5) it will become fully sentient, so it is fully upgraded. Keep in mind that simple minded androids do not have passions, and upgrading them to sentience does not give them any, so they will still not be as good as an AI that started sentient unless it has a good stat you really like.

You can. After you unlock skynet and t2 androids, you can craft/obtain a t2 android body and upload/overwrite the t2's mind with the original one.

Also, with servers you can add passions to the androids, but it gets more expensive depending on the tier of body the mind is currently occupying. To add a passion to a tier 1 android is pretty cheap, only requiring a few servers at once, but you need a lot to add a passion to a t4/5

引用自 Eclantro：

You can. After you unlock skynet and t2 androids, you can craft/obtain a t2 android body and upload/overwrite the t2's mind with the original one.

Also, with servers you can add passions to the androids, but it gets more expensive depending on the tier of body the mind is currently occupying. To add a passion to a tier 1 android is pretty cheap, only requiring a few servers at once, but you need a lot to add a passion to a t4/5

wait you can add passions? I did not know this... I just thought you could add skill points. I'll look into this

引用自 Eclantro：

You can. After you unlock skynet and t2 androids, you can craft/obtain a t2 android body and upload/overwrite the t2's mind with the original one.

Also, with servers you can add passions to the androids, but it gets more expensive depending on the tier of body the mind is currently occupying. To add a passion to a tier 1 android is pretty cheap, only requiring a few servers at once, but you need a lot to add a passion to a t4/5

Is there any way to do this with a blank surrogate android as the one being uploaded into? I kinda already made a few T4 androids to upgrade my T3s into but I just cannot figure out how to do the mind upload. I mean it seems pretty obvious that you should be able to do that, maybe it's just an oversight on the part of the mod creator.

If you crafted a "T4 Surrogate Android (S4)", You need to install an "artificial brain T4" in it in order to upload another mind into it permanently. In the future, create a "blank neural network T4 Android" instead.