This is what I did for my E5573s-320

Go here and enter the IMEI of the mifi.
https://tools.texby.com/unlock-codes/huawei/

It will give you a sim unlock code and flash code.


Now the firmware I used is here
https://routerunlock.com/download-huawei-e5573s-320-firmware-21-180-17-00-00-normal/
( Click the big green down-arrow to download and avoid the adverts)

You'll also need the new Web GUI ( this adds the features and removes three branding)
I used https://routerunlock.com/download-huawei-e5573s-update-webui-17-100-12-00-03-mre5-universal/

Plug the mifi into you laptop/pc ( I used virtual machine on my mac) via USB cable.
When you plug it in for the first time, an autorun disk appears to install the driver. Let it!

Once installed, unpack the firmware zip and run the .exe it will search for the mifi then ask for a password. Type in the Flash code you got earlier.
It should install ok.

Once done, let it reboot and log in to check its ok. It should still look like three branded MiFi.

Now unzip the WebGUI zip and run the exe. Follow instructions , let it reboot once done.

You might find your login/password doesn't work. It should be admin/admin but if you can't login, hold the reset button on the inside of the mifi for 8 seconds to clear it to defaults.

After that it should work fine! Default IP is 192.168.8.1 login/pass admin/admin

Mine seems more responsive and it adds the wifi extender feature plus firewall stuff.

Or this one, without the LCD screen, for £9.99 plus £15 data
http://www.pcworld.co.uk/gbuk/phones-broadband-and-sat-nav/broadband/mobile-broadband/three-pay-monthly-4g-mifi-10145754-pdt.html

hot, these are good

Hot but showing delivery time of 1-2 month now at that price

Or this one, without the LCD screen, for £9.99 plus £15 data
http://www.pcworld.co.uk/gbuk/phones-broadband-and-sat-nav/broadband/mobile-broadband/three-pay-monthly-4g-mifi-10145754-pdt.html

Can you use the wifi repeat feature on these to connect to the Bt wifi hotspots?
Often when I go camping there is a hotspot but it doesnt reach where I'm staying. Potentially this could extend it?

thanks took a punt, fed up with using my phone as the hotspot when on holiday for everyone to connect to

Estimated delivery: 3 Feb. 2017 - 7 Mar. 2017

No its unlocked!

​so just put my o2 SIM with 30gb in and that's it?

how do these compare to the original osprey - wandering if its worth the upgrade

Great price - if you are member of Prime.

I use an unlocked TP Link M7350 and these Mifis are brilliant bits of kit especially to use when travelling/on holiday etc.
Either buy a local SIM or get a 3 Feel at Home and works straight off the bat.
Only thing to be aware of is that the USA works on different bands so they may not work there, or if they do, you may only get 2G. If you want to use one in the USA better off buying one there.

What's the difference using one of these to tethering from phone? I need something for internet in a static caravan but I can't work out whether something like this is needed as isn't it the same to use phone??

it let me reserve one for £9.99 instore, you 100% sure they are unlocked?

The recent data sim deal from Three (£28/24gb for 2yrs) doesn't let you tether according to some users but does work in a mifi.

ahh, I am with EE so allowed to tether

If you are allowed to tether though, is there any use for one of these? Apart from saving your phone battery?

Not really. I bought a couple of Three 24gb data sims for HK in the summer so I really need a mifi. It's surprising how much a Three HK data sim cost compared to the UK bearing in mind Three is a HK company.

Quite often a better range, can connect up to 10 devices (so good for families), you can keep your phone SIM in and buy a local data sim deal if travelling abroad so often works out cheaper, many data sims deals are cheaper than those for tethering.

3 say they should be unlocked, or they will unlock it for you. http://support.three.co.uk/SRVS/CGI-BIN/WEBISAPI.DLL?Command=New,Kb=Mobile,Ts=Mobile,T=Article,varset_cat=billing,varset_subcat=3772,Case=obj(4363)
£9-99 is am amazing price - would be all over that if I did not have one already,

I dont see how the can unlock it as nowhere to enter a code on it,,, it is a tenner so I will take a punt, let you know tomorrow after I pick it up

It's not just £10, the service terms including a 30day rolling contract, minimum £15 a month (5GB data)

Min cost is £9.99(device) + £15(contract) = £24.99 (provided you cancel immediately by providing 30 days notice)

I can confirm this as I bought one yesterday, was in the store for 40 mins whilst they processed the 3 contract at £15 per month. Trying to cancel the "rolling contract" with 3 was a very long phone call, not an easy process, be prepared to be bombarded with alternatives and they didn't believe I could buy a 24gb prepaid sim for under £30 from amazon that will last 2 years.

Also, my device wont hold a charge so back to PC World I go!

Anyone know if these will work ok in the USA with the Prepaid 24gb data only SIM cards?

3 seem quite generous with their roaming data rules, but not 100% sure these devices work on US networks

do you have a link to that?

edit: this?

https://www.amazon.co.uk/Trio-Pay-Mobile-Broadband-Pack/dp/B01M3VJ2B2
I can't see the 24GB option
edit2: it's out of stock as camelcamelcamel shows

Can anyone recommend an antenna for this?

I believe that you cannot tether Using 3UK sims in Hong Kong. You can put them in the phone and use the data but from what I've read, tethering abroad is not allowed in feel at home countries.

ahh, thanks, you save me a visit

that's the one, the 24gb option not showing at the moment

I already know you can't tether but hopefully should be OK in a mifi.

It will work. They may block you if they find a laptop using the data, but of you just tether a phone it will work fine.

My 'feel at home' contract 3 sim wouldn't enable tethering in Spain last week but I had no problem with their data sim in a mifi with 2 laptops connected to it.

I was abroad and used feel at home. It felt like 3g speed only. I ran speedtest on a local's 3 network sim and theirs are 4g and faster.

I brought an unlocked TP Link M7350 mifi before Xmas when my home broadband went down it was a life saver just pop in a data sim and your away

Hi could you explain how you cancelled please?
I just bought one, took ten mins in store to do.
It doesn't seem to be active yet. I'm assuming I need to cancel by ringing three on 0333 number?

Yes, I phoned on 0333 number and went for the "thinking of leaving us" option.

Be prepared to be offered iphones, tablets, mobile phone deals, home broadband, alternative mobile broadband deals etc

What's a good data sim to use with this? because I want to set up a network in my office for spotify and the like.

Yes it's a rolling 1-month contract so fine if you don't mind an extra entry on your credit report

I use an Osprey mini and the reception can be flaky and it needs restarting periodically to fix connection issues, would consider getting the Huawei

Just cancelled my 5573 contract that started yesterday. Took 12mins on the phone with three. They even said I could cancel with 0 contract charge and still use for 2 weeks. No mention of sending the device back for refund.i just gave the 30 days notice though, im fine with trying it out for a month!

They offered a £10 p.m 5gb tariff to try and keep me

These are brilliant. With an antenna such as this one I can get acstring 4G signal, in areas where my phone barely gets 3G.

I'd love some info on how and where to find the files to flash.
My device is the 5573s-320

This is what I did for my E5573s-320

Go here and enter the IMEI of the mifi.
https://tools.texby.com/unlock-codes/huawei/

It will give you a sim unlock code and flash code.


Now the firmware I used is here
https://routerunlock.com/download-huawei-e5573s-320-firmware-21-180-17-00-00-normal/
( Click the big green down-arrow to download and avoid the adverts)

You'll also need the new Web GUI ( this adds the features and removes three branding)
I used https://routerunlock.com/download-huawei-e5573s-update-webui-17-100-12-00-03-mre5-universal/

Plug the mifi into you laptop/pc ( I used virtual machine on my mac) via USB cable.
When you plug it in for the first time, an autorun disk appears to install the driver. Let it!

Once installed, unpack the firmware zip and run the .exe it will search for the mifi then ask for a password. Type in the Flash code you got earlier.
It should install ok.

Once done, let it reboot and log in to check its ok. It should still look like three branded MiFi.

Now unzip the WebGUI zip and run the exe. Follow instructions , let it reboot once done.

You might find your login/password doesn't work. It should be admin/admin but if you can't login, hold the reset button on the inside of the mifi for 8 seconds to clear it to defaults.

After that it should work fine! Default IP is 192.168.8.1 login/pass admin/admin

Mine seems more responsive and it adds the wifi extender feature plus firewall stuff.

mine is coming Feb 2nd

Not with this

Cancelled and reordered with the £10 big thanks voucher.

mine is coming today

I bought a TP-LINK M7350 a few months ago to use for work as I travel a lot, works great with the 32GB EE deal. Unlocked on all networks, decent battery life and screen too.