My T-mobile 9520 can't upgrade 497 or 580. just can load the 436.

I use the official version and delete the V****.xml, use the loader.exe. but it did not work.

I don't know why. help me please……

Have you tried the instructions below?

http://www.blackberryforums.com/gene...ilanguage.html

Can you be more specific with what the problem is?

try a DRM-FW. .580 from Vodafone Egypt!!!

I did it, but failed

Again, details?

It failed. How?

with or without an wipe? Reload 507?

I did wipe. when she "507" on the scree , I run the loader.exe but it can't find the rom just show:" can't find the core application". I can't click next.

But I uninstall the 580 vodafone official version, and install the 436. there is no problem.

Did the DM5.0 limit it? I go to the T-mobile website, and find the 9520 firmware just to 436. It is the answer?

If I recall correct the

Applications: 5.0.0.580
Software Platform: 4.2.0.250
File name: 9520_omanodrmM_PBr5.0.0_rel984_PL4.2.0.250_A5.0.0.580_Zain_Jord an.exe File size: 124.61MB

Was a No DRM version and could not be installed. Is there another 580 DRM ?