CISCO Nexus 3548-x Stuck in boot loader

[Tal Wolberg - Wolberg.Pro]

Hy All
I have 2 Cisco Nexus 3548-x stuck in boot loader.
I have tftp server on ip:10.10.10.20/24
I configured one of the switches to ip 10.10.10.10/24
Directly connected to the laptop.
When i tried to connect using boot tftp://10.10.10.10/n3500-uk9-kickstart.6.0.2.A8.11b.bin

When I try to access to USB stick (Connect to the switch in USB1 port) the loader dont see it as active.
I need to solve the issue urgently these switches need to be installed as the backbone of my hosting production.

Tnx

Tal

[pieterh]

Regarding USB, check how you formatted your USB stick
not all devices accept NTFS -> try FAT32 and don't use a very large USB drive 
also read this post Nexus 3548x Loader Prompt USB Support - Cisco Community

and this post:
Upgrading Cisco Nexus Switches via USB Port - Our Technology Planet (ourtechplanet.com)

[Tal Wolberg - Wolberg.Pro]

Hy 
Tnx for the answer.
I tried several USB stick (8 / 16 /32 gig) Format most of then to 4G FAT or 4G Fat32.
When i command dir the switches only see bootflash but not the USB sticks

[pieterh · Accepted solution]

the document I linked alreade mentioned:

• One common issue you will face while uploading your image via USB port is that your switch will fail to mount the USB drive regardless of whatever formatting choice you use for your USB. The easiest way to get over this problem is by formatting USB through the switch itself by using the below command.

only this command is not visible in my browser
in USB Format for Nexus 3048 - Cisco Community Leo suggest to use FAT16

in addition read Solved: USB not recognized in 3850 - Cisco Community
For anyone else out there having this issue: The drive needs be formatted as FAT (a.k.a FAT16).
FAT can only be used on MBR partitions of up to 4GB so if you have a flashdrive larger than that you'll need to use diskpart (or your preferred partition software) to create a 4GB partition. Then you will be able to format that partition as FAT and the router will recognise it.
follow link to read further