Δεν χρειάζεσαι κάτι τέτοιο, όλα από windows pc τα κάνεις
4 - Now launch OSFMount. Select Mount New, then select the image file you downloaded earlier (i.e. .img extension file) to open. Now select partition 0 (the one that is 15 MB). Click Ok. Then at the bottom of the window make sure to un-tick the "Read only drive". Click Ok. The partition should now be mounted in file explorer. At this point you can navigate to the /grub directory and edit the grub.cfg file.
If you need to replace the extra.lzma ramdisk with the custom ramdisk provided above then you will also need to mount partition 1 (the one that is 30 MB).
Below is what you will see in the grub.cfg file.
I am only showing below the portion of the code that is relevant for the purpose of this tutorial
[...]
set extra_initrd="extra.lzma"
set info="info.txt"
set vid=0x058f
set pid=0x6387
set sn=C7LWN09761
set mac1=0011322CA785
set rootdev=/dev/md0
set netif_num=1
set extra_args_3615=''
set common_args_3615='syno_hdd_powerup_seq=0 HddHotplug=0 syno_hw_version=DS3615xs vender_format_version=2 console=ttyS0,115200n8 withefi elevator=elevator quiet'
set sata_args='sata_uid=1 sata_pcislot=5 synoboot_satadom=1 DiskIdxMap=0C SataPortMap=1 SasIdxMap=0'
set default='0'
set timeout='1'
set fallback='1'
[...]
:!: You want to modify the following: :!:
Change vid=0x090C to vid=0x[your usb drive vid]
Change pid=0x1000 to pid=0x[your usb drive pid]
Change sn=C7LWN09761 to sn=generate your sn here with DS3615xs or DS 3617xs or DS916+ model (this will depend on which loader you chose)
Change mac1=0011322CA785 to mac1=[your NIC MAC address #1]. You can also add set mac2=[your NIC MAC address #2] and so on until mac4 if you have multiple NICs. However, this is not necessary.
Recommended: Change set timeout='1' to set timeout='4' - This will allow you more time to make a selection in the Grub Boot Menu when it appears on screen.
Once you are done editing the grub.cfg file, save it and close your text editor. Now in OSFMount click on Dismount all & Exit.
You are now ready to burn the image to your USB drive.
5 - Now use Win32 Disk Imager to burn the image file onto the USB drive. This will also make the USB drive bootable.