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Update README.txt

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andrum99
2021-10-08 17:06:14 +01:00
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@@ -5,13 +5,14 @@ The Raspberry Pi 4 contains a small EEPROM used to store the bootloader.
This rescue image reverts the bootloader EEPROM to factory default settings. This rescue image reverts the bootloader EEPROM to factory default settings.
This rescue image also updates the USB 3.0 (VL805) firmware to the latest This rescue image also updates the USB 3 controller (VL805) firmware to the
version (138a1) with better full-speed isochronous endpoint support. latest version, 138a1, which has better full-speed isochronous endpoint
support.
The easiest method for creating EEPROM rescue images, and formatting SD cards, The easiest method for creating EEPROM rescue images, and formatting SD
is to use Raspberry Pi Imager from https://raspberrypi.com/software. cards, is to use Raspberry Pi Imager from https://raspberrypi.com/software.
Imager provides a GUI for downloading the latest version of this rescue Raspberry Pi Imager provides a GUI for downloading the latest version of
image and flashing it to an SD card. this rescue image and flashing it to an SD card.
Alternatively, copy the contents of this zip file to a blank Alternatively, copy the contents of this zip file to a blank
FAT formatted SD card. The FAT partition must be < 32 GB. FAT formatted SD card. The FAT partition must be < 32 GB.
@@ -24,10 +25,10 @@ To update the EEPROM:
4. Wait at least 10 seconds 4. Wait at least 10 seconds
If successful, the green LED on the Raspberry Pi will blink rapidly forever. If successful, the green LED on the Raspberry Pi will blink rapidly forever.
An unsuccessful update of the EEPROM is indicated by a different blinking pattern An unsuccessful update of the EEPROM is indicated by a different blinking
corresponding to the specific error. pattern corresponding to the specific error.
If an HDMI display is attached, then the screen will display green for success If an HDMI display is attached, then the screen will display green for
or red if a failure occurs. success or red if a failure occurs.
Once the EEPROM is updated, the SD card can be removed. Once the EEPROM is updated, the SD card can be removed.