Hi en4rab,
I also had an idea for recovery of the bios of the E3, has anyone yet worked out if the Jtag port of the CPU in the E3 is taken to a usable header on the e3's board.
Or to some test pads immediately underneath the OMAP5910 SoC? If anyone does have their E3 in bits, a photograph of the top and bottom of the main PCB good enough to read IC lettering would be helpful. Using a flat-bed scanner can be a good way to achieve this, but make sure not to scratch the glass.
According to the datasheet for the e3's cpu the jtag pins are at locations U15, U16, U17, T14 and R13 (the jtag signals are called (nTrst, TDO, TDI, TMS and TCK off hand i cant rember which pin is which)
Signal GZG GDY Ball Ball TCK W18 T14 TDI Y19 U17 TDO AA19 U16 TMS V17 R13 /TRST Y18 U15
I think the jtag interface from tailor-madecircuits, http://www.tailor-madecircuits.com/jtag_interface.htm , should work for dumping the bios but it doesnt have the nTrst circuitry, but I think it will work, but be warned TMC have had a run on these so there is a bit of a delay on them.
Thanks for the URL, I wasn't aware of them.
Cheers,
Ralph.