Hi David,

The chip is a 29F800TMC-90, which is an 8M-BIT CMOS FLASH MEMORY.

The MX29F800T/B is an 8-mega bit Flash memory organized as 1M bytes of 8 bits or 512K words of 16 bits.
The MX29F800T/B is packaged in 44-pin SOP, 48-pin TSOP. It is designed to be reprogrammed and erased
in the system or in standard EPROM programmers.

You would need to de-solder the chip to replace it or connect it into a reader.

It may be worth speaking to MrTechGuy to see if he has any spares.

I have no idea on how you would flash the correct code onto it (including any boot loader)

Hope this helps.

Cheers,

Steve

Main: 861v6 (LPS), 808v6, UHD722, DSP8000SE Anniversaries, DSP5200HC, DSP7200.2, SW1600, Sky Q, Cambridge Audio BD, Roon, M80
Office: 861v4 (LPS), 818v3, 800v4, HD621, M&K S150P, DSP5500HC, M&K MPS2810 sub x2
Son's system: 861v4, HD621, DSP6000.2, DSP5k.2C, DSP33, F80
Spare: MCD, 100 Series, 200 Series, 500 Series, C15s.