Black update lumia 620

actually i dont understand one point they say to change our manufact code in our phone how ?? :O

You need to replace Manufacturer code from instruction (RM-821_eu_euro1_425) to Manufacturer code that you may see in your phone into
Settings > extras+info > more info
RM-877_nam_att_205 should persist. After that changes you should get something like
Code:
if(oSession.uriContains("RM-846_eu_russia_201"))
 {
 oSession.url = oSession.url.Replace("RM-846_eu_russia_201","RM-877_nam_att_205"); 
 }
and RM-846_eu_russia_201 is the Manufacturer code of my phone. It has been changed to RM-846_eu_finland_204 after flashing to Finland version of Amber and then OTA updating it to Black.
 
You need to replace Manufacturer code from instruction (RM-821_eu_euro1_425) to Manufacturer code that you may see in your phone intoRM-877_nam_att_205 should persist. After that changes you should get something like
Code:
if(oSession.uriContains("RM-846_eu_russia_201"))
 {
 oSession.url = oSession.url.Replace("RM-846_eu_russia_201","RM-877_nam_att_205"); 
 }
and RM-846_eu_russia_201 is the Manufacturer code of my phone. It has been changed to RM-846_eu_finland_204 after flashing to Finland version of Amber and then OTA updating it to Black.

mine is UAE so already updated to black
 
mine is UAE so already updated to black

That instruction can`t help you to update to Black. It only lets you to install the apps that has been blocked mostly by stupid marketing reasons and sometimes technical (like Nokia Beamer, Grand Theft Auto: San Andreas).
 
I am from Pakistan and I have a problem,my father bought this NL620 from a friend of his and have it to me so I have no idea where it was built and manufactured.
Which region should I check for black update,all I know is that it is currently not available for my region because I check daily.
My code is
RM-846_im_mea3_283
Any help is appreciated.
 
I am from Pakistan and I have a problem,my father bought this NL620 from a friend of his and have it to me so I have no idea where it was built and manufactured.
Which region should I check for black update,all I know is that it is currently not available for my region because I check daily.
My code is
RM-846_im_mea3_283
Any help is appreciated.

Download and install Nokia Software Updater for Retail and it will show your real Product Code with no matter what the firmware installed on it

For example, mine is 059R4L6

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