From owner-freebsd-usb@FreeBSD.ORG  Wed Feb 10 09:50:17 2010
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From: Milan Obuch <freebsd-usb@dino.sk>
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Date: Wed, 10 Feb 2010 10:50:08 +0100
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Message-Id: <201002101050.08302.freebsd-usb@dino.sk>
Subject: Huawei E1752 under FreeBSD
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Hi,

I got this 3G modem, it is not recognised under FreeBSD (tested with fresh 
9-CURRENT).

I found no relevant information googling for "huawei e1752 freebsd", 
but "huawei e1752 linux" got me 

http://www.blogcatalog.com/blog/iwrite-2/dbbfb38ae5ef9ccef8540aad7f9edbd6

and there is part about usb modeswitch, part of config reproduced here:

# Huawei E1752
#
# Contributor: 

DefaultVendor=  0x12d1
DefaultProduct= 0x1446

TargetVendor=   0x12d1
TargetProdct=   0x1001

MessageEndpoint=        0x01

MessageContent= "55534243000000000000000000000011060000000000000000000000000000"

It looks like this is the message necessary for switching this device into 
modem mode, but I have no idea how to issue such command. Also, for my use I 
need to get this working under 8.0-RELEASE/STABLE.

Any hint/help on this one?

Regards,
Milan