that is not a modchip in the typical sence it is a clpd gated logic chip programmed to mimic a cheapmod is there another mem/flash chip on the back by chance ?
it looks like they have used a clpd as a gated memory device in other words.
if that is the case you would need a jtag programmer to flash upgrade it and it would envolve writing code you wont be able to flash upgrade it in any way
buy a new one

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