How to Install Https Www Youtube Com Watch V 9ncfn3bdayq
You should upgrade or use an alternative browser.
FIX [Desire 820s] invalid imei; Blank IMEI; WiFi NVRAM Warning
- Thread starter Gibz97
- Start date
- #1
NOTE this only works if your IMEI shows INVALID. If the IMEI is blank then follow the second post.
Switching between Lollipop and Kitkat firmwares in Desire 820s can sometimes result in invalid imei in system or when dialing *#06#
The best solution is to reflash your original firmare. However if you wish to stick to your current firmware then you can easily fix it with the following method:
This only works for invalid imei in system or in dialer and not in bootloader
What you need
- Rooted Desire 820s
- Download Root explorer from this link https://play.google.com/store/apps/details?id=com.speedsoftware.rootexplorer&hl=en
- Now use root explorer and navigate to the root of your phone. You will get a folder named "data". Open in and inside it you will get a folder named "nvram". Rename "nvram" to "nvram_old" and then reboot your phone.
- Your imeis should now be back
If you still have network problems
- Open dialer
- Dial *#*#4636#*#*
- Select Phone information
- Set preferred network type: choose GSM only. (It might change back to Unknown but keep on choosing GSM only until network appears, then you can choose another option)
- #2
If your IMEI is blank when you type *#06# in dialer because you accidentally formatted the phone with SP Flash Tool then follow this:
(Only works on Kitkat firmware. So if you're on Lollipop you'll have to flash KitKat first)
1. First Install Gadget CDC VCOM drivers on your PC using this tutorial https://www.youtube.com/watch?v=9nCfN3bdayQ
2. Download NVRAM DB 820s file from here https://mega.nz/#!4DhgFQrC!vcS5n6tJb1yjjSISrAa0gtATyrmksCNMm0hSCn7hEMw
3. Download SN Write Tool from here https://mega.nz/#!IWxGmDba!UGFtSQUVOLrj1b9LhNdd-0JzuwOvbDuUelXwxYJJ7z8
4. Extract both of them
5. Open SN Write Tool folder and run SN Writer.exe as administrator
6. Let ComPort be USB VCOM and Target Type be Smart Phone
7. Click on system config
8. Under Write option tick IMEI (if Serial Number is also affected tick it as well)
7. Under IMEI option tick dual IMEI
9. Under DataBase File click on MD1_DB and navigate to the NVRAM DB 820s folder and choose the file named =>> BPLGUInfoCustomAppSrcP_MT6752_S00_MOLY_LR9_W1423_M D_LWTG_CMCC_MP_V1_P21_1_ltg_n
10. Then click on AP_DB and navigate again to the NVRAM DB 820s folder and choose the file named ==> APDB_MT6752_S01_KK2.MP13_
11. Click Save
12. Click Start
13. Insert the original IMEI 1 and IMEI 2 of your phone as shown on the box you bought your phone with and Click OK (If Serial Number is also affected type it here)
14. Switch off your Phone and connect it to the PC with a USB cable
15. Wait until it says PASS then reboot the phone
If you're still facing problems download this file https://mega.nz/#!ZaRzVCjD!bzN0oSo6ruujOOXHyt2NjpW54IFqfLrwO2yWpWALZ24
Install these drivers:
Gadget CDC VCOM Driver (most important)
MediaTek DA USB VCOM Port
MediaTek preloader USB VCOM Port
MediaTek USB Port
- #3
What you need to perform the methods..??
1. A Rooted MTK device
2. Root Explorer.apk
3. Wifi Error Fix.rar
How to do this?
On Your Rooted device go to root Explorer
And navigate to File system root/
data/nvram/APCFG/APRDEB
There you will find two files named 1) WIFI , 2) WIFI_CUSTOM just simply delete these files
Now extract the files from the WiFi fix.rar
and move the extracted files to the previous (root/
data/nvram/APCFG/APRDEB) folder.
Reboot phone
Attachments
- #4
i tried many times but your bootloader unlocking method not work with mediatek devices. at least with mine
.when i reboot to bootloader, fastboot don't reconize any devices. When i reboot in download mode, fastboot work; but the code that it release isn't processable by htcdev website.
- #5
Hi.
i tried many times but your bootloader unlocking method not work with mediatek devices. at least with minewhen i reboot to bootloader, fastboot don't reconize any devices. When i reboot in download mode, fastboot work; but the code that it release isn't processable by htcdev website.
To unlock bootloader for the unofficial d820ys flash these pgfs files with SP Flash Tool.
https://mega.nz/#!B90lRJ7D!APtZUcQJCRtO4HQa-XvfT5DazkNtKpnALJoybLx4ZjU
- #8
I tried everything that was written
But nothing seems to get ok .
I'm on 4.4.4 kitKat I researched a bit and got my iemi
Back but still cannot register to the network please help
I cannot call or do anything...
Thanks.....:crying::crying:
- #9
I tried everything that was written
But nothing seems to get ok .
I'm on 4.4.4 kitKat I researched a bit and got my iemi
Back but still cannot register to the network please help
I cannot call or do anything...
Thanks.....:crying::crying:
I will post a guide for those who have formatted their phones with SP Flash Tool
- #10
it's simple for nvram fix just followI will post a guide for those who have formatted their phones with SP Flash Tool
From the top but for the imei got to mtk tools
Use mobileuncle app or mtksettings open engineering
Go to cds information then radio informtion then
Select you sim then type AT +EGMR=1,7," put your imei"
Remember put your phones imei from the box..cheers
- #11
Invalid imei fix
Switching between Lollipop and Kitkat firmwares in Desire 820s can sometimes result in invalid imei in system or when dialing *#06#.
The best solution is to reflash your original firmare. However if you wish to stick to your current firmware then you can easily fix it with the following method:
This only works for invalid imei in system or in dialer and not in bootloader
What you needhelp please no of above worked in my fon desire 820s dual sim imei invalid no signal i dont have back up and no box of fon i dont know imei also help
---------- Post added at 11:42 AM ---------- Previous post was at 11:40 AM ----------
it's simple for nvram fix just follow
From the top but for the imei got to mtk tools
Use mobileuncle app or mtksettings open engineering
Go to cds information then radio informtion then
Select you sim then type AT +EGMR=1,7," put your imei"
Remember put your phones imei from the box..cheers
i dont have box and i dont know my imei please help.
- #12
no mtk engineering modeI will post a guide for those who have formatted their phones with SP Flash Tool
tried sn writer tool
mtk droid tools
nothing seems to work on htc desire 820s lollipop..
help please:crying::crying::crying::crying::crying::crying:
- #13
no mtk engineering mode
tried sn writer tool
mtk droid tools
nothing seems to work on htc desire 820s lollipop..
help please:crying::crying::crying::crying::crying::crying:
Please read the second post of this thread
- #14
I also flashed my phone with sp flash tool. and mistaken ly chose delete all plus download mode. So I have ann empty imei. I have box and real Imei. and my phone is rooted also. but mtk engineering mode apk not working to change imei. Is there any way to change Imei via phone or without flashing a kitkat rom? my current rom is 5.0.1 please help me ?????
- #15
Try Chamelephon apk to edit the IMEIno mtk engineering mode
tried sn writer tool
mtk droid tools
nothing seems to work on htc desire 820s lollipop..
help please:crying::crying::crying::crying::crying::crying:
- #16
then download this app from google store : chamelephon .. it will allow you to change your IMEIs and then your sims will work again ISA
- #17
Blank IMEI FixIf your IMEI is blank when you type *#06# in dialer because you accidentally formatted the phone with SP Flash Tool then follow this:
(Only works on Kitkat firmware. So if you're on Lollipop you'll have to flash KitKat first)
1. First Install Gadget CDC VCOM drivers on your PC using this tutorial https://www.youtube.com/watch?v=9nCfN3bdayQ
2. Download NVRAM DB 820s file from here https://mega.nz/#!N9NB3QDJ!3aoNxm1QjkG93ZHedP-ZhbhkVuL-ZVwWULLhUE7Ritw
3. Download SN Write Tool from here https://mega.nz/#!lxcBWKIZ!1SZVDXoLhlswY24OFFBzowHUN-wHBYPOXOhgoSIshB4
4. Extract both of them
5. Open SN Write Tool folder and run SN Writer.exe as administrator
6. Let ComPort be USB VCOM and Target Type be Smart Phone
7. Click on system config
8. Under Write option tick IMEI (if Serial Number is also affected tick it as well)
7. Under IMEI option tick dual IMEI
9. Under DataBase File click on MD1_DB and navigate to the NVRAM DB 820s folder and choose the file named =>> BPLGUInfoCustomAppSrcP_MT6752_S00_MOLY_LR9_W1423_M D_LWTG_CMCC_MP_V1_P21_1_ltg_n
10. Then click on AP_DB and navigate again to the NVRAM DB 820s folder and choose the file named ==> APDB_MT6752_S01_KK2.MP13_
11. Click Save
12. Click Start
13. Insert the original IMEI 1 and IMEI 2 of your phone as shown on the box you bought your phone with and Click OK (If Serial Number is also affected type it here)
14. Switch off your Phone and connect it to the PC with a USB cable
15. Wait until it says PASS then reboot the phoneIf you're still facing problems download this file https://mega.nz/#!MoMEWRqA!57djmSN3BOimherVGBH3RxrmitdE0XJMwEcny_5wmwc
Install these drivers:
MediaTek DA USB VCOM Port
MediaTek preloader USB VCOM Port
MediaTek USB Port
pls i need NVRAM DB 820s folder & SN Write Tool ,download links are expired :crying:
- #18
pls i need NVRAM DB 820s folder & SN Write Tool ,download links are expired :crying:
I will update them in the next 5 hours
- #20
link dead
Similar threads
How to Install Https Www Youtube Com Watch V 9ncfn3bdayq
Source: https://forum.xda-developers.com/t/fix-desire-820s-invalid-imei-blank-imei-wifi-nvram-warning.3281455/