Comment Re:Some are also destroyed/lost (Score 1) 438
Flash chips do not normally contain JTAG. The WRT54G and phones using ARM have TJAG in the processor. It's for recovery and debugging, allowing the processor to be stopped and manipulated from a computer. If the processor works, TJTAG and USB could be an option.
I would have to recommend against using JTAG. The cheap adapters cost something which is more than free included USB. It is also dog slow. My much older phone would take over 30hours to copy across JTAG with a speed of 256KBs. USB running at full speed still takes around 10min. Newer phones ship with Gigabytes worth of flash, making JTAG alone unreasonable.