Just discovered that fake U2 UPMs have quietly entered the market.
Update 03/19/19 – Many fake U2s are sold from HIDANCE Official Store and ATORCH Innovative Manufactory Co., Store on AliExpress by far. AVOID!
Update 03/15/19 – The FW V5.5 will brick a fake U2.
Below I have made a picture to show how to identify the authenticity of U2.
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A fake U2 comes with a serial number of 104083.
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To be honest, the fake U2 doesn’t look too bad… But anyway double check yours.
You are welcome, good luck!
Update 03/19/19
Received emails from visitors since this post was published. I after statistics found that many fake U2s were sold from HIDANCE Official Store and ATORCH Innovative Manufactory Co., Store on AliExpress by far. They began selling U2 clones in 2019. Even some of the video/text reviews provide the links to U2 clones…
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- BEWARE!! HIDANCE Official Store https://hidance.aliexpress.com/store/2022043
- BEWARE!! HIDANCE Official Store U2 clone link 1 https://www.aliexpress.com/store/product/USB-Color-Tester-Current-Voltmeter-QC4-PD3-0-2-PPS-quick-Charging-Protocol-Capacity-DC-meter/2022043_32921354156.html?spm=2114.12010612.8148356.7.33db5979dR6lfC
- BEWARE!! HIDANCE Official Store U2 clone link 2 https://www.aliexpress.com/store/product/qc4-pd3-0-usb-tester-digital-voltmeter-ammeter-voltimetro-dc-power-volt-meter-usb-test-voltage/2022043_32938373408.html?spm=2114.12010612.8148356.9.33db5979dR6lfC
- BEWARE!! ATORCH Innovative Manufactory Co., Store https://atorch.aliexpress.com/store/2949143
Update 03/15/19
A fake U2 will be bricked when upgrading to V5.5. The error message “104083 ERR” will appear on the screen. (R.I.P. 104083…)
USB Charging 
> The 5-digit mode works well after recalibration
(1)
Can this be done without buying a Test Load device?
(2)
how does the web u2 differ from the qway u2?
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1) For voltage, yes. Try your most stable power supply and your best voltmeter or multimeter.
2) Web- is the brand and U2 is the model, so Qway U2 = rebranded Web- U2.
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name and link authorized resellers on ebay and aliexpress
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Don’t know if there are authorized resellers; mine were directly from the developer.
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Do you have a recommended source/link for a genuine version? Preferably somewhere that ships to the UK.
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Maybe Amazon? https://www.amazon.co.uk/s?k=u2+usb+tester&ref=nb_sb_noss
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[…] Alert: Fake WEB-/WITRN U2 UPMs Have Quietly Entered the Market […]
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I was about to buy a fake. Hopefully I saw your blog.
What do you think of this? They said it change the name. From witrn to away.
And U2 upgraded to U2p.
https://fr.aliexpress.com/item/-/32916093307.html
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Since they may change the trademark at any time, if its firmware can be updated without issues, I would say it is not a pirated one.
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ciao io ho preso 2 pezzi di web-u2 tutte e 2 originali,l’ho smontate per verificare è sono originali
https://www.banggood.com/it/WEB-U2-Current-And-Voltage-Meter-USB-Tester-QC4-PD3_0-2_0-PPS-Fast-Charging-Protocol-Capacity-Test-p-1347851.html?rmmds=myorder&ID=557516&cur_warehouse=CN
ci sono 2 modelli una normale e un altra con chassis di metallo che costa di piu
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Do you know how to do this? Rather than throw it in the trash, I wouldn’t mind fixing it and going back to fw 5.3. Let me know how that’s possible. Meanwhile, I’ll try to translate that previous post.
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I guess only the seller and the developer know how to restore it so far.
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Write to this e-maii and ask for help: how to restore and make genuine tester from fake. After you can upgrade tester to new versions 5.5 and above. dekusu2@tutanota.com
Напишите на эту электронную почту и попросите помощи: как восстановить и сделать подлинный тестер из подделки. После этого вы сможете обновить тестер до новых версий 5.5 и выше.
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Напишите на эту электронную почту и попросите помощи: как восстановить и сделать подлинный тестер из подделки. После вы можете обновить тестер до новых версий 5.5 и выше.
Write to this e-maii and ask for help: how to restore and make genuine tester from fake . After you can upgrade tester to new versions 5.5 and above.
dekusu2@tutanota.com
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I don’t know if the user can recover it.
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I sent E-mail but there is no response.
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Спасибо, хорошая статья.
Жаль, что она была прочтена позже и после того, как я получил кирпич после прошивки.
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I am having such a hard time finding a genuine WEB-U2 on Aliexpress.com; the one I have was bricked with the update, as I didn’t know it was fake at the time. Do you recommend a different similar meter rather than this one? I read your review, stating that the voltage is not very accurate. I’m trying to find something that is similar, with protocol testing and triggering.
I have the A3B, but it seem to be somewhat of a “ripoff” of the RD line of USB testers. It’s very basic and does not have the protocol testing. Let me know what you think, thanks!
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– Do you recommend a different similar meter rather than this one?
Please check your email inbox.
– I read your review, stating that the voltage is not very accurate.
The 5-digit mode works well after recalibration, but the 6-digit mode always behaves a bit strangely. So now I think it’s not an issue of accuracy but an issue of algorithm.
– I have the A3B, but it seem to be somewhat of a “ripoff” of the RD line of USB testers.
Yes, I think so. It’s just a clone of RD UM24C.
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salve ho aggiornato la witrn u2 (clone) con il fw 5.5 ,finito il flash mi ha funzionato per 10 secondi poi ha fatto una schermata bianca con scritto “questa è un clone ” 😂
Il computer non la riprogramma perchè mi da l’avviso “device is not operational” quindi ho mandato in modalità di programmazione il chip collegando il pin “boot0” a +3,3volt ho scaricato dal sito ST il programma “STM32CubeProgrammer” che mi riconosce il chip e lo programma ,ho provato con vari firmware ,il processo va a buon fine ma la witrn u2 rimane a schermo nero 🙄
Per tentare di salvare questo clone servirebbe un backup del firmware di una clone funzionante da poter mettere su questa rotta 😎
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Sounds like a firmware dump from a U2 clone can rescue a bricked U2 clone. 🤔
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Yes. but where can I find this dump?
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