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How to app unlock your HTC S621 Windows Mobile Smartphone


Windows Mobile

This tutorial will guide you in “app unlocking” your HTC S621. I was hoping to create something like ‘how to app unlock a windows mobile smartphone’, but after spending hours and hours trying to unlock my phone, I’ve discovered there are possibly hundreds of different ways – no two are the same, and not all will work for all phones. I can only confirm that the following method works for Rogers (a Canadian mobile provider) customers using the HTC S621. It may work for other Smartphones as well.

App unlocking will allow you to install “unsigned” 3rd party software. If you’ve ever received the error “Installation was unsuccessful. The program or setting cannot be installed because it is not digitally signed with a trusted certificate”, this tutorial is for you.

installation was unsuccessful the program or setting cannot be installed because it is not digitally signed with a trusted certificate

You’ll need to download these 2 files – SP_AllowCertificateInstall.cab and regeditSTG2.exe.

  1. Upload SP_AllowCertificateInstall.cab to your device (or download it directly to your device). Save the file on your devices main memory, not on a mini-SD card. Use the file manager to navigate to SP_AllowCertificateInstall.cab and run it. Click Done when it’s done.
  2. app unlock your htc S621 smartphone

  3. Now upload regeditSTG2.exe to your HTC. Use the file manager to navigate to regeditSTG2.exe and run it.
  4. app unlock your htc S621 smartphone

  5. Now from inside the registry editor, navigate to HKEY_LOCAL_MACHINE\Security\Policies\Policies
  6. app unlock your htc S621 smartphone

  7. When you get to the second Policies folder, click the Values button.
  8. app unlock your htc S621 smartphone

  9. Highlight the 00001001 entry and then select it.
  10. app unlock your htc S621 smartphone

  11. Change the Value data: from 2 to 1, and then click Done.
  12. app unlock your htc S621 smartphone

  13. Now highlight the 00001005 entry and then select it.
  14. app unlock your htc S621 smartphone

  15. Change the Value data: from 16 to 40, and then click Done.
  16. app unlock your htc S621 smartphone

  17. Now scroll down to the 00001017 entry, highlight it and then select it.
  18. app unlock your htc S621 smartphone

  19. The Value data: may already be set to 144. If it is, leave it alone (just click Done). If it’s not, set it to 144 – then click Done.
  20. app unlock your htc S621 smartphone

  21. Now you can close down the registry editor and reboot your phone (turn the power off, then back on again). Your HTC S621 is now app unlocked and ready to install unsigned software.

Posted in Windows Mobile.

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35 Responses

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  1. Jose Carvalho says

    Ross

    Great tutorial. I thought I had the same problem on my HTCS621 and I did the same thing. But the message I keep getting is “this installation file is not appropriate for this device”.
    I have been unable to install any 3rd party software on my smartphone.
    Do you have any idea on how I can fix it?

    Thanks

  2. Chris says

    Hey, I’ve done all you’ve said to do, but I am still unable to install pnester. Still get the the program is not intended for this device message.

  3. Ross McKillop says

    @Chris:

    Exactly the same phone? HTC S621? Which version of Windows Mobile (5, 6 or 6.1)?

    Ross

  4. Chris says

    Yes, the exact same phone running windows mobile 6.0. I recently retried it though and it worked perfectly. I guess I made a mistake along the way the first few times. Thanks again!

  5. ELIAS A.A.JUNIOR says

    OLA…GOSTARIA DE SABER COMO PROCEDO PARA DESBLOQUEAR MEU HTC 621, GANHEI DE PRESENTE DO MEU TIO QUE FOI P EUA…QUANDO EU LIGO ELE DA COMO SIM INVALIDO E MESMO TROCANDO O CHIP ELE NAO FUNCIONA E NAO DA REDE, COMO POSSO PROCEDER?

  6. jaime says

    how can i unlock my htc s621? i bought it in mexico is telcel,but now i have a t-mobile

  7. brb says

    Thanks for the information, very useful!

  8. Chris (A different one) says

    Ross – Thanks a bundle. I’d been pulling my hair out trying to figure out why I couldn’t change the registry values myself.

  9. Robson says

    Gostaria de saber, como faço para desbloquear meu HTC s 711.
    Tenho o código que a Vivo me passou, mas o aparelho não aceita.

  10. Dom Marinelli says

    This worked perfect for me on my Fuze ……This was a great help thank-you!!!!

  11. Michael from Canada says

    It worked ! Thank you !

  12. Luis says

    Mi HTC s621 tiene código de acceso, pero en mi familia lo manipularon y ahora esta bloqueado y no puedo desbloquearlo, necesito saber si alguien me puede decir que hacer para desbloquearlo. Me urge acceder a mis contactos.

  13. Evan says

    I have Moto Q9c with Sprint. was running mobile 6.1 but got bored with “Sliding Panel” homescreen and have been trying to do all sorts of different reg edits and cab downloading, and transfering…….
    THE Q9c will work with this interface?
    and what is the best known app unlock process for Q9c(proven please!)
    i just master reset anyways so i will try said method(great instructions) unlock method witch did not work in the most recent attempt to try a different possible interface… NOBODY seems to have a lot to say about the q9c specifically!

  14. Luciano says

    Ola amigos tenho um HTC 4550 como faco para achar um aplicativo para tv aberta ou pela intenet.

    GRATO: LUCIANO

  15. victorh says

    quisiera saber como desbloqueo el sim cada vez que coloco un sim de cualquier operador celular me pide el codigo de sim

  16. lazaro says

    meu aparelho deu pau so fica com a tela travada no windows mobile como eu posso destravar ele por favor me ajude se poder muito obrigado pela sua atencao

  17. Ahmed Essam says

    hey dude i tried that on my htc tytn ii but it didnt work do i have to set the values back as it was or is it ok

  18. alessandra says

    oi,ganhei um htc s621 e coloquei uma senha pessoal de bloqueio,so que errei a senha e fiz varias tentativas,não consigo desbloquea-lo,gostaria de saber se tem alguma senha original,ou tenho que leva-lo na assistencia?

    aguardo resposta..
    obrigado

  19. cicero mariano silva says

    nao consigo ver o video completo no s621 o q fazer como conceguir novos programas para ele

  20. Bruno says

    pow to aki me acabando pra baixar o windows mobile 6 no meu htc s621 . ele ja tem o 5 e nao consigo atualiza ele de jeito nunhum . se vc poder me dar uma força .obrigado desde entao

  21. miruthanka says

    Nice psot

  22. yakwe says

    comment deverouiller mon telephone htc windows mobile

Continuing the Discussion

  1. Kefrotate.Com » How to app unlock your HTC S621 Windows Mobile Smartphone linked to this post on October 2, 2007

    [...] wrote an interesting post today on How to app unlock your HTC S621 Windows Mobile SmartphoneHere’s a quick [...]

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    [...] unknown wrote an interesting post today!.Here’s a quick excerptI was hoping to create something like ‘how to app unlock a windows mobile smartphone’, but after spending hours and hours trying to unlock my phone, I’ve discovered there are possibly hundreds of different ways – no two are the same, … [...]

  3. How to app unlock your HTC S621 Windows Mobile Smartphone | HTCPhoneBlog.info linked to this post on October 2, 2007

    [...] This tutorial will guide you in “app unlocking” your HTC S621. I was hoping to create something like ‘how to app unlock a windows mobile smartphone’, but after spending hours and hours trying to unlock my phone, I’ve discovered there … Read More [...]

  4. Anyone Know How to Get Opera Mini Running on SMT5800? - PDAPhoneHome.com linked to this post on February 12, 2008

    [...] By the way, here’s a link to an excellent blog post that describes exactly how to app-unlock this phone, worked perfectly for me, letting me install the Esmertec Jbed engine and some other things. How to app unlock your HTC S621 Windows Mobile Smartphone – Simplehelp [...]

  5. Anyone with a personal review of the smt5800 from vzw? - Page 2 - PDAPhoneHome.com linked to this post on February 15, 2008

    [...] Windows Mobile. That is a good idea to do it before you activate. This is a must be done edit. How to app unlock your HTC S621 Windows Mobile Smartphone – Simplehelp And this is just a nice little edit if you have a storage card since IE is such a storage hog. [...]

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  7. Java MIDlet Managers & Bluetooth - PDAPhoneHome.com linked to this post on March 4, 2008

    [...] registry. Here’s the link to the page I found that worked for me, and they have the cab as well: How to app unlock your HTC S621 Windows Mobile Smartphone – Simplehelp Go to that page and follow the directions exactly, and it should work like a charm. Only, I used [...]

  8. HTC Home - PDAPhoneHome.com linked to this post on March 17, 2008

    [...] Originally Posted by Mincer I get a ‘This program cnnot be installed because it does not have sufficient permissions’ notice when it tries to install- anyone else? You need to unlock your phone. This guide works great with our phones. How to app unlock your HTC S621 Windows Mobile Smartphone – Simplehelp [...]

  9. How do you fix - "not signed with a trusted certificate or one of its components."? - PDAPhoneHome.com linked to this post on July 22, 2008

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  10. Probleem met installatie van cab-files - Pagina 2 - Pocketinfo forum linked to this post on January 2, 2009

    [...] even helder en duidelijk uit kan leggen hoe ik dit voor elkaar moet krijgen. Alvast bedankt! How to app unlock your HTC S621 Windows Mobile Smartphone – Simple Help Hier kan je alles vinden om je policies anders in te stellen. Dan kan je het installeren. [...]

  11. Probleem met installatie van cab-files - Pagina 2 - Pocketinfo forum linked to this post on January 2, 2009

    [...] even helder en duidelijk uit kan leggen hoe ik dit voor elkaar moet krijgen. Alvast bedankt! How to app unlock your HTC Windows Mobile – Simple Help Hier kan je alles vinden om je policies anders in te stellen. Dan kan je het installeren. [...]

  12. How to play youtube video on wm6.5? - Axim Users Dot Com linked to this post on December 21, 2009

    [...] 2. update the certs to enable installing untrusted third-party software using the instructions at How to app unlock your HTC S621 Windows Mobile Smartphone – Simple Help. I did not try this because it involves registry change and is claimed to work for HTC s621 [...]

  13. The QA Guru » Blog Archive » How to app unlock your HTC S621 Windows Mobile Smartphone linked to this post on January 22, 2010

    [...] unlocking will allow you to install “unsigned” 3rd party software. If you’ve ever received the error “Installation was unsuccessful. The program or setting [...]



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