![]() ![]() This behavior can be overridden with the -force option. This is a safety measure to prevent accidentally overwriting the secure bootloader, which can ultimately lead to bricking the device. Bootloader Protection įlashing into the bootloader region ( 0x0 -> 0x8000) is disabled by default if active Secure Boot is detected. Use the -e/-erase-all option to erase all flash sectors (not just the write areas) before programming. As a result, when the flashing offset address or the data are not 4096-byte aligned, more memory is erased than actually needed.Įsptool will display information about which flash memory sectors will be erased. To successfully write data into flash, all 4096-byte memory sectors (the smallest erasable unit) affected by the operation have to be erased first. The -u/-no-compress option disables this behaviour. Compression īy default, the serial transfer data is compressed for better performance. See the Flash Modes section for more details. Since esptool v2.0, these options are not often needed as the default is to keep the flash mode and size from the. py - port / dev / ttyUSB0 write_flash - flash_mode qio - flash_size 32 m 0x0 bootloader. ![]()
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January 2023
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