Hello!
As many of you have noticed, then main reason why a Chihiro goes broken, are those damned fans over the heatsink on the GFX chip. previous versions had just a bigger heatsink that was enough to do the job.
As a result, the GFX chip breaks and you end up with a brick.
In order to fix your Chihiro, you can take a specific model of Xbox and modify it to work as a Chihiro PCB.
to convert a xbox mobo into a chihiro motherbase, you need to double the amount of ram memory that the xbox has. For that, you need to buy 4 of these:
https://www.ebay.es/itm/1-PCS-K4D26...700760?hash=item1c89a9f358:g:FaoAAOSwgv5ZU2Mc
See here for more info on the process:
http://www.gc-forever.com/forums/viewtopic.php?t=1060
If you are not an expert, I recommend that you ask
@irepairsega who is an expert on this and knows how to do the job for a reasonable fee.
About the Xbox to be converted, check here:
http://www.informit.com/articles/article.aspx?p=367210&seqNum=2
You can only convert XBOX that have the chip Coneixant on the video Output and Bridge MCPX X3.
Those are the ones which have 1.3 or older. You can know the revision just by the serial number.
If serial number is 32 or smaller, you are good.
Once you have the right motherboard and the extra ram installed, you just need replace the 24C02 and the 29F080.
The 29F080 is the same always. The 24C02, you may want to change as that file specifies the MAC address the the motherboard will have.
http://www.mediafire.com/file/jriiv826bwmpghy/Chihiro_I2c%2BFlash.rar/file
Il collegamento include 2 diversi file 24C02 in modo da poter vedere cosa cambia. Il CRC viene calcolato allo stesso modo del Chihiro, nel caso tu voglia cambiarlo. Vedi qui come calcolarlo:
http://xboxdevwiki.net/EEPROM
Ho sentito che quei 2 ricordi possono essere aggiornati come in Xbox senza dissaldare. Non ho mai provato però. Guarda qui un piccolo tutorial in spagnolo sulla modifica del contenuto senza dissaldare:
https://www.elotrolado.net/hilo_tutorial-como-leer-yo-escribir-en-la-eeprom-via-hardware_879366
Divertiti!
Permettetemi di insistere ancora su questo. Il processo è complicato, quindi non farlo da solo a meno che tu non sappia cosa stai facendo. Ti consiglio vivamente di contattare @irepairsega per ottenerne uno.
Grazie!