Chapter 2. Development environment
2.4.17 The encrypted device cannot be re-ashed via the ash download tool. What could
be the reason?
CHIP: ESP32 | ESP32-S2
• Currently, an encrypted device cannot be ashed again using the ash download tool. It only
supports one-time encryption of plaintext.
2.4.18 When updating ESP32 rmware through UART interface based on esptool serial
port protocol, can I add a new app partation?
• The partitions in ash depend on the data in partition_table.bin. If partition_table.bin can be updated, the
storage space of other data, such as bootloader.bin and app.bin, can be redivided to create an app partition.
2.4.19 I am using ESP8266 to download the rmware via ash download tool. After
downloading the rmware, there is no programming output log, and the serial
port printed the following messages. What could be the reason?
ets Jan 8
2013,rst cause:1, boot mode:(3,7)
ets_main.c
• Please check whether the hardware wiring is correct. See Boot mode wiring instructions.
• Please check whether the download oset address of bootloader.bin is correct. The oset
address downloaded from bootloader.bin of ESP8266 is “0x0”. If the oset address is
wrong, the ash cannot be started.
2.4.20 Why does my USB driver failed to be recognized by the Windows7 system?
• Please download and install the USB Serial JTAG driver <https://dl.espressif.com/dl/idf-driver/idf-driver-esp32-
usb-jtag-2021-07-15.zip> manually for the Windows7 system.
2.4.21 After using the ESP32-WROVER-E module to download the program, the follow-
ing log is printed after powered on. What could be the reason?
rst：0x10 （RTCWDT_RTC_RESET），boot:0x37（SPI_FLASH_BOOT）
【2020-12-11 15:51:42 049】invalrd header：0xffffffff
invalrd header：0xffffffff
invalrd header：0xffffffff
• Generally, it is because the GPIO12 was pulled high. It is recommended to pull it low and see the
results. Please see ESP32 Boot Log Guide.
2.4.22 When using the Flash Download Tools to ash ESP32-C3 via USB, 8-download
data fail occurs repeatedly. How can I solve it?
• Please erase the chip completely rst before ashing
• This problem has been solved in V3.9.4 and above versions
Espressif Systems 21
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