7i92 BootSector is invalid

Dear,
I connected the 7I92 according to the instructions. In the attached trace you can see that 7I92 responded to the command :
"mesaflash --device 7i92 --verbose" 
and 
"mesaflash --device 7i92 --readhmid".

At the command :
"sudo mesaflash --device 7i92 --write 7i92_7i77_7i74D.bit"
linux reports an error: 
Checking file ... OK
   File type: BIT file
Error: BootSector is invalid



Analyzing the error, I came to the place where it was generated:
// if board doesn't support fallback there is no boot block
     if (board-> fallback_support == 1) {
         if (check_boot (self) == -1) {
             if (fix_boot_flag) {
                 write_boot (self);
                 if (check_boot (self) == -1) {
                     printf ("Failed to write valid boot sector \ n");
                     fclose (fp);
                     return -1;
                 }
             } else {
                 printf ("Error: BootSector is invalid \ n");
                 fclose (fp);
                 return -1;
             }
         } else {
             printf ("Boot sector OK \ n");
         }
     }

Part of the code taken from  github.com/LinuxCNC/mesaflash/blob/master/eeprom.c


According to the comment from that part of the program, it follows that there is no fallback block on 7I92.


How can I solve this problem?

 

For fix it:
mesaflash --device 7I92 --addr 192.168.1.121 --fix-boot-block --fallback --write 7i92_fallback.bit
mesaflash --device 7I92 --addr 192.168.1.121 --write 7i92_7i77_7i74D.bit

With your advice, I solved the problem. Thank you.