Never seen that chip around here, these are quite strange in my country
Maybe your problem is that with FW upgrades, the player's USB VID/PID changes slightly, according to the firmware... from observation (duh, speculating again...) I see that original ATJ209x chips use PID=FF61, while AK102x clones use PID=FF66, a bit weird considering that these chips are sort of interchangeable. That might be why Windows asks for another driver... then again, some versions of the ADFU driver take into account and work with the clone's PIDs... daaaah, headache...
In the end, what you will do with the player?
pd. Mexico, cierto?
ambos sabemos espaņol, y hablando en ingles lol xd