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Signal Loss - 1 bar - No Sevice I747m - Cant receive calls

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By blainville10, Junior Member on 12th June 2014, 11:30 PM
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Hi,

I have a fido I747m I baught off someone and tried before buying it to see if my rogers and Pc mobile sim works. Did placed call and was ok. After placing a few calls I was having trouble getting them to go through. Only 10-30% of calls go through. I noticed the signal strength is one bar and increase to full when placing the call and if it does quickly the call will go through if there is a delay the call wont go through. Now to receive calls I cant unlesss by chance I have more than one bar when someone is trying to call me so less than 1% of calls I receive. I've wiped and reflashed the fido rom bell rom and the new pc mobile rom the result is the same. Turned on/off airplane mode to get to work for less than a minute. Ive rooted the phone and modified to downgrade to 4.1.2 still no luck. Some people are telling it may have been unlocked badly. What can I do. I want to try to flash EFS but Im seeing I need to jtag which I dont have. Please let me know what I can do or if there is nothing that can be done.

EMEI OK
Last edited by blainville10; 12th June 2014 at 11:37 PM.
 
 
15th June 2014, 10:22 PM |#2  
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17th June 2014, 04:15 PM |#3  
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Quote:
Originally Posted by blainville10

Hi,

I have a fido I747m I baught off someone and tried before buying it to see if my rogers and Pc mobile sim works. Did placed call and was ok. After placing a few calls I was having trouble getting them to go through. Only 10-30% of calls go through. I noticed the signal strength is one bar and increase to full when placing the call and if it does quickly the call will go through if there is a delay the call wont go through. Now to receive calls I cant unlesss by chance I have more than one bar when someone is trying to call me so less than 1% of calls I receive. I've wiped and reflashed the fido rom bell rom and the new pc mobile rom the result is the same. Turned on/off airplane mode to get to work for less than a minute. Ive rooted the phone and modified to downgrade to 4.1.2 still no luck. Some people are telling it may have been unlocked badly. What can I do. I want to try to flash EFS but Im seeing I need to jtag which I dont have. Please let me know what I can do or if there is nothing that can be done.

EMEI OK

Your NV file might be damaged/corrupted, which seems to be quite frequent with unlocking. You could copy one from another phone with nv-reader-write.

Before going that route though, you can try flashing another modem. I believe the latest one for Canadian users is ND3.
17th June 2014, 04:27 PM |#4  
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That's what I actually did and worked. I didn't even modify the nv file and change the imei on the file. That easy it kept its own imei.


I tried flashing radio before and didn't work.
Last edited by blainville10; 17th June 2014 at 04:42 PM.
21st June 2014, 01:01 AM |#5  
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Is it normal I didnt have to change the imei number of the nv file.
21st June 2014, 05:59 AM |#6  
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Never try to "change" the imei. Unless meeting very specific criteria that is illegal.
Didn't you just say its working now though? Or did I misunderstand? Imo, messing with NV data should always be a last resort. If something goes wrong you can cause irreparable damage to the device. Plus ime, many people find they don't even need to go this route and just flashing the stock firmware often solves the problem.
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