02-07-2015 09:25 AM
34 12
tools
  1. John20212's Avatar
    Has anyone tried changing the ATT rom on their new ATT Lumia 520? Can you flash it with international rom?

    Since the 520 is so cheap I thought it might be a good phone to get for experimenting. After all if you screw it up its not like you are losing a 920 or 1020.
    08-06-2013 06:31 PM
  2. AR2186's Avatar
    You should be able to flash an international or generic ROM onto it using Nokia Care Suite. However, you may have a hard time getting it SIM unlocked from AT&T, i think they have some difficult policies regarding their go-phones.

    I bought an international Lumia 620 and can flash AT&T roms on it, and the 920 can easily flash international versions
    08-06-2013 06:41 PM
  3. tgp's Avatar
    I'm curious about the 520 as well. I was not able to figure out which ROM to use, based on descriptions like these:

    059T105 RM-915 VAR US ATT PAYG SL
    059T104 RM-915 VAR US ATT IDB PIB SL
    059S925 RM-915 VAR US ATT SL
    059T149 RM-915 VAR LATAM-LTA PR CLARO SL
    059T037 RM-915 VAR LATAM LTA JM DIGICEL SL
    059T279 RM-915 VAR LATAM AR CLARO SL SKD
    059S2D2 RM-915 LTA SWAP
    059S2D1 RM-915 LIGHT SWAP ENG GLOBAL


    This is just a short list as an example. Can someone help me out?
    08-07-2013 02:36 AM
  4. AR2186's Avatar
    I'm curious about the 520 as well. I was not able to figure out which ROM to use, based on descriptions like these:

    059T105 RM-915 VAR US ATT PAYG SL
    059T104 RM-915 VAR US ATT IDB PIB SL
    059S925 RM-915 VAR US ATT SL
    059T149 RM-915 VAR LATAM-LTA PR CLARO SL
    059T037 RM-915 VAR LATAM LTA JM DIGICEL SL
    059T279 RM-915 VAR LATAM AR CLARO SL SKD
    059S2D2 RM-915 LTA SWAP
    059S2D1 RM-915 LIGHT SWAP ENG GLOBAL


    This is just a short list as an example. Can someone help me out?
    Generic roms are designated as _CV (meaning country variant) or Developer, you should be able to find product codes here:
    http://forum.gsmhosting.com/vbb/f609...wnload-1660094
    08-07-2013 07:26 AM
  5. tgp's Avatar
    Generic roms are designated as _CV (meaning country variant) or Developer, you should be able to find product codes here:
    Nokia Product Code Listing for Care Suite Download - (Lumia 625 Added) - GSM-Forum
    Yes I had already found that page. Some of the ROM descriptions I can figure out; others I cannot. I'm just looking for an unbranded ROM that my AT&T 520 will take. Would one like this qualify?

    059T103 RM-915 VAR EU IL CV
    08-07-2013 08:08 AM
  6. AR2186's Avatar
    Yes, should work. I'd go with a GB (Great Britain) CV though
    08-07-2013 09:35 AM
  7. tgp's Avatar
    Can I flash an RM-914 ROM, or do I have to stick to RM-915? I know that RM-914 is for Europe & Asia, but what's the difference in the ROMs, and will they work on each others' hardware?
    08-07-2013 02:28 PM
  8. AR2186's Avatar
    I'm not sure the difference or if you can use it, but there is a similar discrepancy for the 920's with RM-820 (North America) and RM-821 (rest of world). There are instructions somewhere on WPCentral or XDA about how to flash the other product code, and it seemed pretty easy (just needed to rename a folder essentially). I have a Lumia 928 and a 620, so I can't say for certain
    08-07-2013 05:25 PM
  9. tgp's Avatar
    Another question: is there a CV rom that has 4G? The European one I flashed works fine, except 3G is the highest connection speed available.
    08-08-2013 04:45 PM
  10. AR2186's Avatar
    Not sure, you may have to try a few. It also depends on how they define "4G", as the 520 doesn't have LTE. Generally I think they should be branded as LTE, H+, H, E, etc.
    08-08-2013 06:39 PM
  11. tgp's Avatar
    I do get H+ with this rom, but in Settings >> cellular the only two options in Highest connection speed are 2G and 3G.
    08-08-2013 10:48 PM
  12. AR2186's Avatar
    H+ is a 3G technology, no matter what your carrier tries to tell you (actually even first geneation LTE is technically 3G). AT&T started this trend when they couldn't roll out LTE as quickly as Verizon, and it has caught on
    08-08-2013 10:59 PM
  13. MrGoodSmith's Avatar
    How about flashing the AT&T rom into non AT&T device? Basically I would like to test the GDR2 update but not sure if it would cause any harm to my phone or disable any features.
    And in case I wanted to revert back to my original rom, would flashing it back return my phone to original state, or would some roms cause permanent changes to a phone or leave any traces?
    08-09-2013 01:06 PM
  14. tgp's Avatar
    I unlocked my 520 and put a T-Mobile SIM card in it. It works fine, except data remains at Edge. MMS works great, both sending and receiving. I tried changing the APN but I can't get data better than E. Is it the hardware or the ROM? I don't know. Tonight I'd like to try another ROM and see what happens.
    08-09-2013 01:12 PM
  15. jt1234's Avatar
    Did you have any luck finding a Rom that gave you 4G and internet sharing?
    08-12-2013 08:13 PM
  16. tgp's Avatar
    Did you have any luck finding a Rom that gave you 4G and internet sharing?
    No I haven't gotten any data speed above Edge yet with my T-Mobile SIM card. Also the Internet sharing works right after flashing, but after using it a time or two the message to contact the carrier to add sharing pops up. I tried the trick of installing another keyboard language, and then it works again for a bit, then the message comes back. Sometime soon I plan to flash back to the AT&T ROM and see if I can get 4G with my T-Mobile SIM. Maybe I need a US based ROM? I have no clue.

    I also have a SIM unlocked 521 (T-Mobile) and I get 4G with AT&T on that phone. I'm officially confused! Maybe someone with more knowledge on the radios can explain it for me. Here's what I get:

    AT&T Lumia 520 (SIM unlocked):

    AT&T: 4G
    T-Mobile: Edge

    T-Mobile Lumia 521 (SIM unlocked):

    T-Mobile: 4G
    AT&T: 4G

    I'm learning a lot about flashing ROMs, and it's lots of fun! And if I end up bricking the 520 I'm only out $90.02.
    08-12-2013 09:21 PM
  17. mogelijk's Avatar
    To get 3G/HSPA+ speeds on T-Mobile, your phone needs to have both the 1700 and 2100 frequencies -- the L520 does not have the 1700 Mhz frequency. AT&T uses the 850 and 1900 Mhz frequencies, the L521 has both, so AT&T 3G will work on the 521.

    T-Mobile is adding support for 3G on the 1900 Mhz frequency as part of their LTE upgrades, which also uses 1700 Mhz. In those areas you should be able to get 3G, you can find a map here that shows locations where T-Mobile has refarmed the 1900 Mhz frequency to support 3G.
    08-12-2013 10:40 PM
  18. jt1234's Avatar
    I am having troubles flashing with Nokia care suite. I used data manager to get the FW. In Tool for store I select Programing then recovery. I set the app to no connection then click start. All the while the phone is on. I get Recovery failed Invalid response from device
    08-13-2013 07:25 PM
  19. tgp's Avatar
    I am having troubles flashing with Nokia care suite. I used data manager to get the FW. In Tool for store I select Programing then recovery. I set the app to no connection then click start. All the while the phone is on. I get Recovery failed Invalid response from device
    It's a bit tricky. If you keep getting the error message while the phone is on, try clicking Start with the phone unplugged. If you still get the error message, try rebooting the phone and clicking Start at various stages of booting. When you get the timing right you will get a windows telling you to boot the phone by pressing power & volume down. After you feel the short vibration click Retry, and Nokia Care Suite should take over. I've flashed ROMs a number of times, and it still takes some trial & error.
    jt1234 likes this.
    08-13-2013 08:48 PM
  20. jt1234's Avatar
    Wow That sounds really sketchy. I on the other hand do not want to brick this guy. true 100$ is not a lot but on the other hand ... I am scared that if something goes wrong she will not be able to recover like you normally should. One more thing have you tried to flash it back to stock yet?
    08-13-2013 08:54 PM
  21. jt1234's Avatar
    OK!! Think i got this
    First I found it easiest to shut off the phone. Then plug it in and as soon as it vibrates hit start button.
    I have the AT&T Lumia 520 RM-915 Unlocked with a Net10 AT&T Sim. I flashed ( 059S340 RM-915 VAR APAC AU CV ).

    For setup you can use either English or English(USA) and same for location that doesn't matter either. I did uncheck Nokia improvement plan. I tried internet sharing and it instantly failed, didn't even think about connecting like it did with factory firmware. APN wasn't yet setup and it said "call AT&T" instead of "Internet sharing isn't currently available" because there is no internet connection. I setup my Wi-fi and got the Chinese bopomofo keyboard. It required a reboot. I then setup my APN using access point settings not cellular settings.

    Turned Internet Sharing on off a few times and I left it on for a while it seemed to work. I was having DNS issues and low speeds. The phone was showing H instead of 4G. Skype stayed connected
    08-14-2013 12:34 AM
  22. notsogosu's Avatar
    I unlocked my 520 and put a T-Mobile SIM card in it. It works fine, except data remains at Edge. MMS works great, both sending and receiving. I tried changing the APN but I can't get data better than E. Is it the hardware or the ROM? I don't know. Tonight I'd like to try another ROM and see what happens.
    How did you unlock the phone? with a website or did AT&T unlock it for you? I'm trying to purchase this phone for my father but the Unlocked phones cost aroun $190 while the AT&T one is 90. I also don't live in USA and we have the same frequencies as AT&T.
    08-14-2013 12:12 PM
  23. jt1234's Avatar
    I used unlo​ckforcheap.​com
    08-14-2013 02:47 PM
  24. notsogosu's Avatar
    Thanks! Was yours a GoPhone or regular contract?
    08-15-2013 08:51 AM
  25. jt1234's Avatar
    I have the GoPhone. I would not think it would make a difference. I have had a couple issues. The battery fully died and it was stuck on a boot charge screen. I had to remove the battery and replace it to get it to boot. Then I charged it overnight and it would not wake up. It rang when i got a call but would not wake up without a reboot.
    08-15-2013 02:41 PM
34 12

Similar Threads

  1. Lumia 928 worth getting now?
    By dmoore228 in forum Nokia Lumia 928
    Replies: 26
    Last Post: 08-16-2013, 01:56 PM
  2. Replies: 2
    Last Post: 08-13-2013, 03:49 PM
  3. Replies: 9
    Last Post: 08-10-2013, 04:04 PM
  4. Anyone Hae An unbranded Lumia 925 ROM?
    By Beshoy Hanna in forum Nokia Lumia 925
    Replies: 6
    Last Post: 08-07-2013, 11:12 AM
  5. How to use Lumia 925 on att?
    By Beshoy Hanna in forum Nokia Lumia 925
    Replies: 8
    Last Post: 08-06-2013, 07:47 PM
LINK TO POST COPIED TO CLIPBOARD