can you help me? esp8266 rtos sdk ota flash crc failed

[syemour]

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SDK version:1.5.0-dev(a8c4880)
fpm open,type:2 0
force slp enable,type: 2
fpm close 1
mode : sta(5c:cf:7f:0c:3d:5c)
add if0
scandone
state: 0 -> 2 (b0)
state: 2 -> 3 (0)
state: 3 -> 5 (10)
add 0
aid 2
pm open phy_2,type:2 0 0
cnt

connected with espressif, channel 11
dhcp client start...
ip:192.168.2.248,mask:255.255.255.0,gw:192.168.2.1
connected


Connect ok!
spi_size_map= 4
upgrade user_bin2_start= 129
upgrade->fw_bin_sec_num= 123
upgrade->fw_bin_addr= 528384
upgrade->fw_bin_sec_earse= 129
Request send success
pre erase flash!

pusrdata HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
ETag: W/"297348-1513251713781"
Last-Modified: Thu, 14 Dec 2017 11:41:53 GMT
Content-Type: application/octet-stream
Content-Length: 297348
Date: Sun, 17 Dec 2017 10:31:30 GMT

?
userbin sumlength:297348
totallength= 1215
flash_erased= 0
flash erase over
Connect ok!
spi_size_map= 4
upgrade user_bin2_start= 129
upgrade->fw_bin_sec_num= 123
upgrade->fw_bin_addr= 528384
upgrade->fw_bin_sec_earse= 129
Request send success

pusrdata HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
ETag: W/"297348-1513251713781"
Last-Modified: Thu, 14 Dec 2017 11:41:53 GMT
Content-Type: application/octet-stream
Content-Length: 297348
Date: Sun, 17 Dec 2017 10:31:35 GMT

?
userbin sumlength:297348
totallength= 1215
flash_erased= 1
upgrade_task 98 word left
>>>recv 2675B, 294673B left
upgrade_task 98 word left
>>>recv 4135B, 293213B left
upgrade_task 98 word left
>>>recv 5595B, 291753B left
upgrade_task 98 word left
>>>recv 7055B, 290293B left
upgrade_task 98 word left
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upgrade_task 98 word left
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upgrade_task 98 word left
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upgrade_task 98 word left
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upgrade_task 98 word left
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upgrade_task 98 word left
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upgrade_task 98 word left
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upgrade_task 98 word left
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upgrade_task 98 word left
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upgrade_task 98 word left
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upgrade_task 98 word left
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upgrade_task 98 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
>>>recv 159695B, 137653B left
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upgrade_task 90 word left
>>>recv 162495B, 134853B left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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upgrade_task 90 word left
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>>>recv 295075B, 2273B left
upgrade_task 90 word left
>>>recv 296535B, 813B left
upgrade_task 90 word left
>>>recv 297348B, 0B left
upgrade data load finish.
img_crc = 3329472300
flash_crc = 965494996
upgrade crc check failed !

Exit upgrade task.

[syemour]

4M flash

[Her Mary]

Is the bin file on your OTA server waiting for downloading, a real user2.bin？
Or you just put some other bin on the server for testing?

[syemour]

Is the bin file on your OTA server waiting for downloading, a real user2.bin？
Or you just put some other bin on the server for testing?

I put 8266user1.bin and 8266user2.bin on my own OTA server,
I rename them to 8266user1.bin and 8266user2.bin,
flash_crc = 965494996 is equal with the 8266user2.bin‘s compile result，
but img_crc is not right.
my ota server crc is D4 48 8C 39,,just == 0x39 8C 48 D4 == 965494996
so I think img_crc is somewhere wrong,but I cannot resolve it,
please grant some help to me ?

[Her Mary]

I guess that maybe your sever sends not only the user.bin, but also more data while downloading, so the CRC check fail.
You can just try to open the url for downloading on the browser on your PC to see if it can download the user.bin.
Or capture the TCP packets to check what is sent from the server.