yashsingh1/xdaforums huggingface dataset:
[Galaxy Tab 2 Q&A, Help & Troubleshooting] Zte blade l:
Mostly this problem can be solved by just doing a factory reset in the stock recovery..

If it doesnt help there is only 1 way

-installing stock firmware using odin.

Follow these steps.

1.download the stock firmware from this site.

http://www.sammobile.com/firmwares/

2. Now download odin app in ur pc/laptop.

http://odindownload.com/download/Odin3_v3.10.6.zip

3. Now charge your device above 60%, and go to download mode (power button + vol down)

And connect your device to ur pc.

4. Open odin and then select the firmware you downloaded from PDA button.

5.make sure you dont check/uncheck anything in there.just select the firmware and click start.

6.during this process it is best not to disturb your device, and if you see it rebooting dont worry it is common it will reboot several times if necessary.

7.once it is completed it will show pass in the pc.

And your device must have to reboot automatically, now remove the usb cable.

8.give it some time for booting, if it doesnt get booted even after 20 mins you can just go to the recovery mode,this time you will see the stock recovery, there perform a factory reset

9.now you can reboot,you will come to the stock firmware you had at first.

HURRAY YOU SOLVED YOUR PROBLEM!!!!

Note- remember to install your USB drivers if odin doesnt recognize your device.

Always have your device charged above 60%
[Galaxy Tab 2 Q&A, Help & Troubleshooting] Leoisback:
u can install samsung kies then uninstall it only (only) to get drivers for all samsung devices
[Android General] ktetreault14:
Is it possible to add T-Mobile LTE bands to a sprint lg g2. It has a Qualcomm processor and uses the refarmed 1900 at the moment
[Android General] yakapa40:
[MENTION=4491606]ktetreault14[/MENTION]

if your device is LG LS980 : NO

it's a material motherboard problem ,this device has only chipset for LTE band 25,26 and 41

T-Mobile US work with band 4 (1700Mh , b12 and b2)

you can try to add these bands with NV6828 but won't work

regards
[Android General] ktetreault14:
Oh thank you very much.
[Android General] BlackSoulxxx:
WOW, I didnt notice the band 6 things. Tks very much for notify me this.....:D
[Android General] yakapa40:
NV6829

same value as NV6828 :

same value as NV6828 :

LG-D315 LG-LS980 NEXUS-D820 NEXUS-D821 ZTE4G-N9510

but some devices have no NV06829 (0x1AAD) - Inactive item :

E250L G730A G870A G900A G900F G900P G900W8 I257 I317 I317M I337 I437 I537 I747 I747M I9195 I9205 I9305 I9505 I9506 M819M M919 N900T N900W8 N910T N915T N9005 S7275R SC04E T889 T889V T999L

regards
[Android General] yakapa40:
i think we can change only few items with service mode (*#0011#)

exemple with G900F:

*848^"Acquisition Order Preference"^"System*"

-850^"Service Domain Preference"^"System*"

00 02 00 00 00 00 00 00

0: CS only

1: PS only

2: CS+PS

4722^"NAS Release Compliance"^"Factory*"

by default:1

0:forces the UE to behave as R97/R98 irespective of the SGSNR bit

1:forces the UE to behave as R99 irespective of the SGSNR bit

2: causes the UE's behavior to be dynamic in accordance

with the SGSNR bit or EGPRS bit

65538 lte_3gpp_release_ver

by default 0x23

0x24 REL 10

0x23 REL 9

0x18 REL 8

65633:"LTE Band Preference"^"MMode*"

Set as per bands supportedby UE

66011^"TDS RRC Integrity Protection Enabled"^"TDSCDMA*"

by default:1:Enable Integrity

0: Disable Integrity

66012^"TDS RRC Ciphering Enabled"^"TDSCDMA*

by default:0:Disable Ciphering

1: Enable Ciphering

66013^"TDS RRC Fake Security Status"^"TDSCDMA*"

by default:0: disable fake security

1: Enable the UE fake security

http://i.imgur.com/2uFf7Ja.png

and maybe more in a few days
[Android General] yakapa40:
G900F ServiceMode : in this menu you can see some NV items

thanks to tom1283 for G900T1: http://xdaforums.com/showthread.php?p=53168459#post53168459

service mode is only a short cut to see some items (only few can be changed here)

*#0011#

Back

Key Input : Q

Key Input: 0

for the fun

regards
[Android General] yakapa40:
why i added more lte frequencies with NV6828 and 5829 and don't work ?

it can be a material problem ,for low cost reason all devices can't work with all frequencies (rx and tx Integrated Circuit )

exemple here with a N9005 shematic :

regards
[Android General] RicSou:
Is possible to add B4 LTE band 1700 mhz to a SM-G800F? It has a Exynos 3 Quad 3470. How?

Enviado desde mi MB526 usando tapatalk
[Android General] yakapa40:
hello

B4 AWS(1700/2100) frequency is only use in NAR ( North American Region) and i leave in France so i can't try

if you want to test :

only B4 change NV6828 ( D7 00 08) to 08 00 00 (flipped)

add B4 to originals frequencies: change NV6828 ( D7 00 08) to DF 00 08 (flipped)

but don't forget B4 is no actived in 3G (NV1877) with a G800F by default

regards
[Android General] RicSou:
Great thanks, I'll try, I do not speak English but I am helping with the translator. The band B4 only need to 4G LTE

Enviado desde mi MB526 usando tapatalk
[Android General] Eminemiero:
hi, im from Uruguay (Latin America) and I have a Lg G2 D802. Is it possible to add the 1700mhz lte band?
[Android General] yakapa40:
[MENTION=5487085]Eminemiero[/MENTION]

i think no but you can try

if you want to test :

only B4 change NV6828 ( C5 00 08) to 08 00 00 (flipped)

add B4 to originals frequencies: change NV6828 ( C5 00 08) to CD 00 08 (flipped)

regards
[Android General] nimms:
I have N900v (Note 3 Verizon USA with Bands 4 and 13 active) I was trying to add band 40 using http://xdaforums.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059, But after editing 6828 and 6829 values to include band 40, after a restart, It won't stick. According to this http://xdaforums.com/showpost.php?p=56373848&postcount=368, The Phone stores original values in RMT_STORAGE file, which will revert to old values on restart. For One plus One mobile, they've created a flashable file, but am not sure if it would work for me.

Any help here?
[Android General] yakapa40:
[MENTION=650462]21031980[/MENTION]

as you can see at the end of the first link , the thread is closed ( post 613 )

with a Samsung N900V you have not NV6829 (see my post 7 )

N900V NV6828:

(b4, b13)original value 08 10 00 00 00 00 (flipped)

if you want to try to add b40:

b4+b13+b40 : 08 10 00 00 80 (flipped)

regards
[Android General] nimms:
Values don't stick after restart!!!

Tried writing with NV items reader writer, On checking immediately after writing, i can see those changes (6828 is 08 10 00 00 80) but after a restart, it's back to original value (6828 is 08 10 00 00 00)
[Android General] yakapa40:
[MENTION=650462]21031980[/MENTION]

i don't know why because i have not a N900V device but i can say with N9005,G900F and I9305 , NV items reader writer is working

have you try with EFS and is your phone root?

regards
[Android General] berna82:
is this useful for GT I9505?

HI [MENTION=4583018]yakapa40[/MENTION] you refered me to this thread but I dont get how to make it. any light? I need to enable the band4

thanks!
[Android General] yakapa40:
[MENTION=6539372]berna82[/MENTION]

if you want to try this solution you can follow this thread : http://xdaforums.com/galaxy-s2/orig-development/tool-updated-09-06-14-efs-professional-t1308546

and post me your NV6828 value ( i think it's D5 00 08 00 00 00 00 00 ) , i will calculate the newer for you

thanks
[Android General] berna82:
sorry too noob do i need to be rooted? Also how to I find the NV6828 value?
[Android General] yakapa40:
[MENTION=6539372]berna82[/MENTION]

if you select : Qualcomm NV tools you can try without rooting the device

1: try this ussd code to put your device in Diagnostic mode

keydial: *#0808#

and select / RNDIS+DM+MODEM

OK

or *#7284#

select Qualcomm USB Setting

and select / RNDIS+DM+MODEM

OK

or if you select : EFS Profesionnal you need a root device with a buzy box app

don't forget to came back to MTP or MTP+ADB when you have finish to work

regards
[Android General] berna82:
ok once I did that change what?

I am totally lost

thanks

---------- Post added at 07:36 PM ---------- Previous post was at 07:09 PM ----------

nv tools seem not to connect any reason why?
[Android General] yakapa40:
if you don't understand EFS pro please do nothing and buy a new phone whith B4 band for your country or send me a Private Message with your mail adress i'll make you a tuto to try to add b4

left click on my pseudo

regards
[Android General] berna82:
[MENTION=4583018]yakapa40[/MENTION]

already sent you a message thanks
[Android General] yakapa40:
[MENTION=6539372]berna82[/MENTION]

your tuto is here:

english : https://drive.google.com/file/d/0BzyeAt2hy6XeS2dfdmhnSS1hS2s/view?usp=sharing

french : https://drive.google.com/file/d/0BzyeAt2hy6XedGdaSFFlcUwybkE/view?usp=sharing

regards
[Android General] yakapa40:
updated database in post2 :

LG: D505,D820,D851,D855,D959,E980,F180K,LS990

Samsung G7015 , N900T
[Android General] regspy:
[MENTION=4583018]yakapa40[/MENTION] Is this the same case with Sprint HTC One M8? a material problem?

Because although i was successful in activating LTE band 3 and 7 on a Verizon HTC One m8. I couldn't replicate the success with a Sprint HTC one M8
[Android General] yakapa40:
i have no HTC shematics so i don't know if it's a material problem

post your original NV6828 and NV6829 , the new you want to add and witch soft you use to change NV values

regards
[Android General] Azlun:
May I know how you can get so many nv setting data, I was trying to find some but not easy...
[Android General] yakapa40:
@ Azlun

google is your friend (NV are store in QCN files )

new updates in post2:

LG: F320S

Samsung SC01F SC03E SCH-I605 GT-N7105SM-N915A SM-N915W SM-A500H SM-G386T

MOTO-XT1032

One+One

regards
[Android General] velikicupo:
Greetings,

sorry to bother you with a question only somewhat related but I am quite stuck regarding the nv items on qualcomm chipset.

Long story short, as a project for our University we are trying to develop an Android app showcasing different possibilities of managing smartphone modem. Unfortunately, it looks like we are stuck / have defined our goals too high and now we have to decide if our original idea is possible at all.

My question is:

is it AT ALL possible to read/write modem information (nv items) from the phone itself (Android app)? We only need network related info like bands and frequencies used, if we could lock phone to certain frequency or certain cell tower that would be great. If something like this is possible, could you give us a pointer in right direction?

Note: I should mention that due to budget restrictions we are limited to using already available test smarthphones - Sasung Galaxy S4 (GTI9505) and S4 mini.

So far, we have researched various PC tools that could do that (but it has to be Android app), we checked ModemManager and various examples using RIL daemon but without any luck so far. We are able to send AT commands on S4 mini (big S4 does not have smd0 device, we tried creating it with mknode but it won't work), but AT commands regarding frequency are missing.

Thank you for your time in helping us with this project
[Android General] jkjambo:
Hello

I do have LG L90 (D415 t-mob variant) and i'm not getting 3G in europe, because it only supports wcdma 850,1700,1900 bands , but i need 2100 . i've calculated 1877 nv value with nv calculator , but without any success . tried too much calculations , but i'm only losing signal at all , and that's all i'm getting after changing 1877 value ( even if i change with correct 441,946,2954 values)

So what to do?

Also , when i updated phone to lollipop , in hidden menu appeared LTE bands (too many) , but LTE isn't activated on this phone at all, so i can't check any of them .

any ideas ,what to do?

hardware is exactly as G2 mini , which as i know have LTE too

LG L90 D415 NV value

1877: 111674240 ( 80 03 A8 06 00 00 00 00)

2954: 115868544 (00 FF FF FF FF 00 00 00)
[Android General] yakapa40:
@ velikicupo

please send me a PM with your mail adress and i can work with you on the project

@ jkjambo

D415 original NV1877 value: 80 03 A8 06 00 00 00 00 (flipped)

try to change to : 80 03 E8 06 00 00 00 00 (flipped)

NV:441,946 and 2954: don't change the values original values are correct

441: 00 FF FF 00 00 00 00 00

946: 00 FF BF 00 00 00 00 00

2954: 00 FF FF FF FF 00 00 00

80 03 A8 06 (flipped) = bit 7,8,9,19,21,23,25,26

if you need to add Bit 22 WCDMA Band I -3G 2100 EUROPE Japan & Asia New-Zeland

bit7,8,9,19,21,22,23,25,26 = 06 E8 03 80 = 80 03 E8 06 (flipped)

regards
[Android General] yakapa40:
error, double post
[Android General] Azlun:
Thank you for reply, but I have never been gotten any forum from google search rhat can found those many qcn files, can you let us know several your frequency used links?
[Android General] yakapa40:
@ Azlun

it's very hard to find free files.qcn because they are extract of boxes or dongles and you can find all device informations somes are extracts of my backups device

regards
[Android General] jkjambo:
I've tried that before , but with no luck .

Don't know , what i'm doing wrong . i couldn't add lte bands to sprint m8, now i can't do similar for LG l90, WTH is wrong with me? hah :D

Should i have custom kernel or whole os itself?
[Android General] AlpineMan:
Thank you for this thread. I was looking at this thread: [GUIDE] Add all GSM and LTE bands to your phone but unfortunately the thread has been closed.

I have a Verizon Samsung Galaxy Note Edge (SM-N915V). It currently only has LTE bands 4 and 13 enabled. I was able to use QXDM Pro to modify NV Item 6828 from its original value of "4108" to "139710" to enable bands "1/2/3/4/5/7/8/13/17" and I see that after rebooting, when I read NV Item 6828, it says "139710", so atleast I know that the values are sticking after reboot. However, when I connect to AT&T LTE, it only connects to band 4. I also tried changing NV Item 6829 to "139710", but that didn't do any good either.

Do I need to change any other NV Item to make it work? The guide also says to modify NV Items 441, 946, 1877, and 2954 if I want to add any 3G bands. I'm not sure if I'm supposed to do so to enable the LTE bands I want. The current values of my NV Items via QXDM Pro on my SM-N915V phone are in my attached screenshots.

Thank you for your help.
[Android General] yakapa40:
@ AlpineMan

NV6828: 139710=bands 2,3,4,5,6,8,9,14,18 if you want to try to to enable bands "1/2/3/4/5/7/8/13/17" NV6828=69855 (you can use NV calculator)

like you can read in post 7 all Samsung device have no NV6829

about 2 and 3G:

NV441,946 and 2954 do not change values , original values for all Samsung devices are in post 1 in these values you have Band Class and WLAN (wifi )

441:00 FF FF 00 00 00 00 00

946:00 FF BF 00 00 00 00 00

2954:00 FF FF FF FF 00 00 00

regards
[Android General] Azlun:
Can you sent me the qcn backup with QPST software download? Without SIM? Let me check it owns all nv need for band you want or not, mostly nv24226,24227,24228 etc will missed in device not support bands while you have QRCT-nv manager to view it.
[Android General] AlpineMan:
I do not need to change my NV Item 441, 946, 1877, and 2954? I went ahead and changed my NV 6828 to 69855. I'm still only getting LTE band 4. I do not know if there are other AT&T LTE bands near my area. I will be travelling tomorrow, hopefully my destination has other LTE bands.

Have you come across an app that displays available LTE bands you can connect to and also allow you to connect to that band manually?

Thanks again.

Sorry, I can't send you my QCN backup. There's private info in the backup that I'm reluctant to share. I'll see if I can take screenshots of NV 24226, 24227, and 24228.

(update) I just looked. These NV Items don't exist on my SM-N915V.
[Android General] yakapa40:
@ AlpineMan

AT&T LTE bands in US are: 2,4 and 17 ( you can find them with my post1 link: List of LTE networks: http://en.m.wikipedia.org/wiki/List_of_LTE_networks )

about NV1877:

AT&T LTE UMTS bands : V and II (bits 26 and 23 ) ( List of UMTS networks : http://en.wikipedia.org/wiki/List_of_UMTS_networks )

your original NV1877 values are like SM- N900V ( 87 03 E8 04 00 00 02 00 dec: 562950035735431) you don't need to change them :BC0A,BC0B,BC1 ,GSM DCS 1800 ,GSM900 Extended GSM bit9 ,GSM 900Primary GSM ,GSM 850 band US GSM-850 ,GSM PCS 1900 band US GSM-1900 ,WCDMA Band I ,WCDMA Band II,WCDMA Band V and WCDMA Band VIII

regards
[Android General] Azlun:
N915V is a phone with only LTE band3/4/13 official support,it is based on APQ8084+MSM9625(TBC)

so it should be mostly like my NEXUS6 nv catlogs:

almostly 20-36 RF nv items for each band RX and TX paths, so if you just add one for each band, it will not works,

as my experience on NEXUS6 band1 enablement, you need to add one or two nv and modify 7-8 nv according your knowlege.

I hope you can find the way by comparing each bands xml files save by QRCT-NV Manager in case you own such a tool.

in fact, I will not abuse any qcn, I have gotten many never-seen friends qcn but I only get the non-personal RF part to applied on band enablement.

for the info about IMEI, ESN, MEID IMSI etc. I have never forward to anyone or do any reuse,just in order to make sure all my freinds are still keep privited.

I think you are note that, something like Akey and AAA password is never accessable by QPST since designed code in modem side.

so, personal idea, send the qcn to me will not harm. while I just try for help.
[Android General] Azlun:
I think for AlpineMan request for ONLY LTE bands enablement, all the 3G nv above is no need to touch, he can just begin with

<NvItem id="24227" subscriptionid="0" name="RFNV_LTE_B2_TX_MULTI_LIN_V3_DATA_I"

<NvItem id="24229" subscriptionid="0" name="RFNV_LTE_B4_TX_MULTI_LIN_V3_DATA_I"

<NvItem id="24240" subscriptionid="0" name="RFNV_LTE_B17_TX_MULTI_LIN_V3_DATA_I"

View attachment nosim_qcn.zip are my NEXUS6 XT1103 band qcn files and xml source. I do not know how you will use it ^_^
[Android General] yakapa40:
error in post 44

your original NV1877 values are like SM- N900V ( 87 03 E8 04 00 00 02 00 dec: 562950035735431) good BC values are BC 0A,BC 0B and BC1

sorry

@ Azlun

in the first post you can read:

this thread is for every body who want to make phones better.

it's not a request qcn files so please stop to ask users their qcn files with encrypted values

thanks
[Android General] Azlun:
OK, I just want to help.
[Android General] AlpineMan:
My trip got cancelled. Wasn't able to test additional bands.
[Android General] yakapa40:
database update in post2 :

LG: D415 D800 D801 E988 F160L F220K

Samsung GT-I8150 SGH-I527M SM-A500F SM-G360G SM-G530H SM-G900T1 SM-N915V (thanks to AlpineMan )

MOTO XT1058

NOKIA: C2701

BYOND: C404

ZTE:Z990(roamer)

regards
[Android General] Azlun:
Anybody know the github link for open source to change nv items from android Linux,such as moto xt907? I search it for long in XDA but really not reach it.
[Android General] yakapa40:
[MENTION=5256159]Azlun[/MENTION]

maybe with RadioComm , you can take a look here: http://xdaforums.com/showthread.php?t=2166542

regards
[Android General] Azlun:
Thank you for reply, but what I was expecting is a apk or sh command run on phone side to read/change nv items at running time, that make us control the nv without a PC. I remember there somebody in XDA working on this but can not refund it with my piece of memory.

finally I refound it ，thank you [MENTION=3457922]stargo[/MENTION]

I am expecting some code change to make on it can control nv10, nv6828, nv65633, nv00441,nv1877 etc....

generate to read and write any write-able items..

http://xdaforums.com/showpost.php?p=54773773&postcount=7
[Android General] eldonly:
so sad no sony models here. where could i find the xperia z ultra hardware details? i changed the nv6828 and got b38~b40 unlocked, but can't got td-lte reception. i wish to know if any possibility to make it work by changing other items, or it is impossible to got td-lte at all. thank you.
[Android General] Azlun:
i think you need to tell the varriant model number like C6653 C6603 etc.. different model will have different RF Front end hardware defined different band possiblity.

from below, I can see that NO varriant have support band 38/39/40, so I think you have no change to get your device works in China.

since in my experienced case, we will need a reference devices band38/39/40 RF NVs beside NV6828, and 65633 to copy to your target device.

more detail about such B39 B40 hardware discussion in Chinese on nexus5, you can find my post in

http://bbs.gfan.com/android-7664034-1-1.html

http://en.wikipedia.org/wiki/Sony_Xperia_Z_Ultra

Model FCC id Carriers/regions GSM bands UMTS bands LTE bands Notes

C6802/XL39h PY7PM-0530 Worldwide Quad Penta N/A [19][20]

C6806 PY7PM-0430 North America Quad Penta 1, 2, 4, 5, 7, 8, 17 [21] Google Play Edition[22]

C6833 PY7PM-0410 Worldwide Quad Penta 1, 2, 3, 4, 5, 7, 8, 20 [23]

C6843 PY7PM-0620 Brazil Quad Penta 1, 2, 3, 4, 5, 7, 8, 20 [24]

All variants support four 2G GSM bands 850/900/1800/1900 and five 3G UMTS band 850/900/1700/1900/2100.
[Android General] Azlun:
if you want dig more on Hardware,

from ewisetech teardown, http://www.ewisetech.com/Pages/Product/bom.aspx?s=1098&dt=6820

SKYWORKS PAM SKY77629-13(B1/2/3/4/5/8/20,even CN disabled LTE on CPU MSM8274+WTR1605) is used on C6802/XL39H, you can double check at https://fcc.io/PY7/PM-0530 detail page.

since, according SKYWORK reference design, you will need is using

SKY77753 or SKY77778 for band38/39/40/41

more reference you may possible found SKY77629-13/21 for

:

https://fcc.io/PY7/PM-0430

https://fcc.io/PY7/PM-0410

https://fcc.io/PY7/PM-0620

to see the internal photo to get a rough idea.

I am sorry I do not have much time to dig more, pactise yourself
[Android General] eldonly:
thank you so much for your detailed reply.

my device is c6833.

i will dig more on it and post result here.
[Android General] eldonly:
from PY7PM-0410 page of fcc, i got the details of c6833. no frequency range can cover b38, b39 or b40. i also checked sky77629, seems this PA also doesn't support b38~b40. so sad i need to buy a new phone for it.
[Android General] Azlun:
I think so.
[Android General] BlackSoulxxx:
Z ultra should have no problems when using z1/z1c value.....
[Android General] AlpineMan:
I have a Verizon Samsung Galaxy S4 (SCH-i545). I tried changing NV Item 6828, but unfortunately, it wouldn't stick after rebooting phone. Anyone know if this phone is capable of other LTE bands besides 4 and 13?

BTW, I've also tried adding LTE bands on Verizon Galaxy Note 3. One was on stock Verizon Samsung 4.4.2 ROM (NV Item 6828 change wouldn't stick) and the other was on stock 4.4.4 (NV Item 6828 change sticks). Unfortunately, haven't traveled lately to see if added LTE bands worked.

Thanks!

[UPDATE] It appears that the NV Item change on the SCH-i545 will stick if you downgrade the modem to MDK.
[Android General] eldonly:
Hi BlackSoulxxx, excited to get your reply.

right, ZU and Z1 should have similar hardware.

but can your Z1 get b38~b41 td-lte reception?

i changed 6828 value and got those bands unlocked, but no reception.

if you got them, would you please share the values and method with methanks!
[Android General] AlpineMan:
I'm using QXDM to write values. It appears that QXDM isn't using standard notation . I found the post below from another thread:

"If you insist on trying to enable everything, at least remove the non-existant bands i.e. write the following to both NV 6828 and NV 6829:

dec 35184371990526 (hex 1FFFFFFE7FFE) for NV editors that use standard notation or

dec 17592185995263 (hex FFFFFFF3FFF) in non-standard NV editors like QXDM"

More about this non standard notation of QXDM here: http://xdaforums.com/showthread.php?p=55635592

[MENTION=4583018]yakapa40[/MENTION] what NV editor do you use? Thanks!