关于esp32-s2 自带4Mflash启动时校验镜像失败问题。

[ld@987]

ESP-ROM:esp32s2-rc4-20191025
Build:Oct 25 2019
rst:0x3 (RTC_SW_SYS_RST),boot:0x1f (SPI_FAST_FLASH_BOOT)
Saved PC:0x40051236
SPIWP:0xee
mode:DIO, clock div:1
load:0x3ffe6100,len:0x16dc
load:0x4004c000,len:0xa8c
load:0x40050000,len:0x2afc
entry 0x4004c218
I (24) boot: ESP-IDF v4.4-dev-2184-g166c30e7b2-dirty 2nd stage bootloader
I (24) boot: compile time 08:32:45
I (25) boot: chip revision: 0
I (29) boot.esp32s2: SPI Speed : 80MHz
I (33) boot.esp32s2: SPI Mode : DIO
I (38) boot.esp32s2: SPI Flash Size : 4MB
I (43) boot: Enabling RNG early entropy source...
I (48) boot: Partition Table:
I (52) boot: ## Label Usage Type ST Offset Length
I (59) boot: 0 nvs WiFi data 01 02 00009000 00006000
I (66) boot: 1 phy_init RF data 01 01 0000f000 00001000
I (74) boot: 2 factory factory app 00 00 00010000 00100000
I (81) boot: End of partition table
I (86) esp_image: segment 0: paddr=00010020 vaddr=3f000020 size=19404h (103428) map
I (115) esp_image: segment 1: paddr=0002942c vaddr=3ffcc060 size=031fch ( 12796) load
I (118) esp_image: segment 2: paddr=0002c630 vaddr=40024000 size=039e8h ( 14824) load
I (124) esp_image: segment 3: paddr=00030020 vaddr=40080020 size=7a5b4h (501172) map
E (250) esp_image: Checksum failed. Calculated 0x5 read 0x56
E (253) boot: Factory app partition is not bootable
E (259) boot: No bootable app partitions in the partition table

有人遇到这种情况么？一般时什么原因导致的？

[ESP_Gargamel]

应用固件校验失败，到时启动失败。建议重新烧录新固件。