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README.md: Warn about risk of HW damage when using clip #5

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README.md: Warn about risk of HW damage when using clip #5

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Expand Up @@ -19,6 +19,13 @@ we will use to flash coreboot.

![](/images/odroid-h4-ultra-flash-1.jpg)

NOTE: It is important to note that there are tiny SMD resistors near the flash chips, which can be
easily torn off when attaching the clip to the flash chips. Specifically, the resistor between pins
7 and 8 of the first flash chip (said resistor is to the right of the `BIOS2` / `SPI_2` text in the
picture) is very close to the flash chip and it has been broken off in at least one occasion, which
made the board only boot from the second flash chip. The fix is simple: solder the missing resistor
back, possibly further away from the flash chip. Its value can be found in the schematics.

### How to use the programmer

To use the picoprog to read the NOR flash containing the firmware, we need to use a programmer
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