After completing this guide and successfully changing the fan i ran the device and played some games for half an hour without a problem but then a error came on the screen i thought it's just a glitch so i restarted my hacked console and this message came up :

error uSD failed to process the DMA transfert!

error uSD failed to switch to hight-speed from low voltage!

error fatal error failed to initialize the sd card!

I think the sd card reader has problems.

Ah good! i have more confidence now in doing it once you said you're a middle age mom with no experience