Opera Mini 5.1

Since I posted Opera Mini 5.1 a couple of days ago several readers have commented that it generally works OK on their i856s and i9s  but frequently crashes causing the phone to reboot. Opera Mini 3.1 and 4.2 had the same problem and the fix was to add the line:

iDEN-MIDlet-miniJIT: off

To the app’s JAD file. I’ve done the same for Opera Mini. I don’t know if this will help or not as I don’t have an i856 or an i9.  So if you have one of these phones try installing this version and letting us all know if it helps or not by leaving a comment.

If you already have Opera Mini 5.1 on your phone, Download Apps will not automatically prompt you to install the new version after downloading it. You need to go to Java Apps, highlight Opera Mini 5.1, press the menu key and choose “Update”. Say yes to the prompt “Keep existing application data” so that you don’t lose your bookmarks.

If your are trying to run Opera Mini 5.1 on an i465 or any other iDEN handset except the i856 and i9 , it probably won’t work. If you want to try it anyway  this version of Opera Mini will probably run even more slowly than the generic 5.1 available here.

Type: Freeware
Vendor: Opera Software – Product Page, Online Help, Forum
Data Connection Required: Yes
Supported iDEN phones: i9 and  i856 only
File Size: 267 KB

Downloading uses paid data. Downloads are for basic phones that support Java ME such as Nokia S40 phones. They do not work on Android, Apple, Firefox or Windows phones.

Download to your Phone

Go to http://boostapps.com with your phone's browser, click the "Enter jump code" link and enter this jump code: 2504

Download to your PC


  1. CORRECTION! 5.1 runs at a very comfortable speed on my i856 but i did notice an occasional crash. its the 5.1 with the possible crash fix update that runs painfully slow. my i856 doesnt like that version installed as an update or on its own. tried both.

  2. 5.1 runs painfully slow on my i856. 5.0final runs great!

  3. if opera is free y did i get charged still? i am on the pay as you go plan. a reply would be good

    • I’m on Boost iDEN pay as you go and I’ve never been charged for using Opera. What makes you think that’s what the charge was for? What does it say in the Account Activity section at http://BoostMobile.com ?

    • its really not for me its for my friend. he believes that opera charged him. i told him opera is free but he blames me because i put it on his phone for him. i told him how i can find out with the boost account activitey but i cnt bcuz he dnt kno his pin #

  4. what can you download. and can i856 support themes.

  5. i would have 2 agree its extremely sluggish on my i856

  6. i dont like it dennis it is to slow on my i856. i went back to 5.0. i tried your link for the upgrade and i did not like the new upgrade.

  7. The speed is extremly slow. I know in opera 5 the speed was fine, but it (5.1) takes takes forever to download everything.

  8. i used the non iden download link for my sanyo incognito and works great. I have great speed and love the new features. And love the downloads

  9. i dont know dennis it seems like it the speed got slower and making it seem long for my i9 to trun off

  10. The problem on my i856 with this is that trying to just download it as a new app will not work (i had opera mini 5) it will install, but just hang, with opera mini 5 everything was working fine and did not reboot, but i only went on facebook, i’m going to install the regular 5.1 download from thursday and then update to see what happens

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