My samsung is experiencing a custom binary block

You likely have a program error or malware, perform a factory reset.

odin mode use to install custom rom,install firmwear,root phone

see here CUSTOM BINARY BLOCKED BY FRP LOCK Google Search

detailed solution:
https://drfone.wondershare.com/factory-reset-protection/solve-custom-binary-blocked.html

MERRY CHRISTMAS!
Here is a link to a YOUTUBE video on how to fix that...

See here:
Samsung Galaxy Note 5 shows Kernel is not SEAndroid Enforcing plus other...

If you can't reset your Samsung, you should take it to Client Service of your cell phone provider and ask them to reset it.. They have the proper codes to do it.

Maybe is uploading to the FTP site using ascii transfer type, once on the FTP connections, you should use binary type.

that is done with the command bin:

The following FTP Command will set the file transfer mode to BINARY (the binary mode transfers all eight bits per byte and must be used to transfer non-ASCII files). ) and display the information.
ftp> binary 200 Type set to I. ftp