Me and my gf installed our very first modchip today, actually she did all the bios leg and solder all the wires onto modchip. Well, she has steadier hand than me, this made me feel kinda useless.
Its a Matrix Infinity on a V4, we find most of the points are not too diffcult to solder (of coures you need a steady hand), the most diffcult points for us to solder on is B & I. We tried to solder this 2 point for an hour after the frustration we read the VIA guide, so we scrap it and the wire finally went on ok.
Me and my gf never solder anything before this ps2, we think this is definitely a good expreience for us and its FUN. And the key to success a modchip installation is Patient and of coures A Steady Hand
attached 2 picture, the first one is taken yesterday, we decide to solder all the wires on before we recieve our chip. Second one is the finished one. It may not looks as good as expert's installation, but we are really happy with it.