dr.bizar
31-10-2002, 10:41 PM
Hi all...
Almost everyone who played long enough with nokia phones have experienced a bad cobba chip...
I'm a electronic technician. and right now i'm playing around with the cobba...
Well anyways i found out that alot of bad cobba chips can be saved from doom. - I't seems the chip just enters a self test mode (a simple internal JTAG procedure). with just keeps looping until something or someone stops it...
This mode can be "bypassed" or "exited" by writing a "bad" sum
to the registers in the cobba.
You will have shortcurcuit some pins to do this procedure, but as far it worked on 2 out of 3 phones with cobba problem.
I'm using C++ to write the serial data to chip, and just solder the wires directly on chip....
I will post a toturial on how to do this - when and if it works 100%
Anyone else got any experience with writing directly to cobba registers ??? If so plz do tell...
Plz stay updated on this thread.... I will drop a post when i find out if this procedure ROX or SUX...
Almost everyone who played long enough with nokia phones have experienced a bad cobba chip...
I'm a electronic technician. and right now i'm playing around with the cobba...
Well anyways i found out that alot of bad cobba chips can be saved from doom. - I't seems the chip just enters a self test mode (a simple internal JTAG procedure). with just keeps looping until something or someone stops it...
This mode can be "bypassed" or "exited" by writing a "bad" sum
to the registers in the cobba.
You will have shortcurcuit some pins to do this procedure, but as far it worked on 2 out of 3 phones with cobba problem.
I'm using C++ to write the serial data to chip, and just solder the wires directly on chip....
I will post a toturial on how to do this - when and if it works 100%
Anyone else got any experience with writing directly to cobba registers ??? If so plz do tell...
Plz stay updated on this thread.... I will drop a post when i find out if this procedure ROX or SUX...