ULTIMATE GUIDE: UNLOCK M028T/M023T [L02C]-BOARD VERSION-16XXXXX
ULTIMATE GUIDE: UNLOCK M028T/M023T [L02C]-BOARD VERSION-16XXXXX
11-07-2017, 06:27 PM
LETS UNLOCK LO2C VARIANCE OF M023/M028T BOOST EVEN MIFI
![[Image: TUT0.png]](https://s1.postimg.org/el7vpsblr/TUT0.png)
The L02C has many board version. This guide works on all L02C16XXXXXXX, e.g. L02C160103-0924, if your board serial bears this 16XX, it means you have the board made in 2016 with subsequent month and day which may also fall within the range to avoid WTPTP ERROR
THE NEWER L02C WITH 17XXXXXX HAS BEEN SUCCESSFULLY UNLOCKED WITH IMEI METHOD, Will Upload soon
WHY WTPTP ERROR
The modem boot-loader files (fbf) which includes NTIM and OBMI; must be verified. The error apppears in some models because these boot files are newer *(Version Date) than firmware (files) to be flashed. For example a board version L02C17XXXXXXX will constantly show error with  L02C16XXXXXXX firmware, If board date is higher than firmware version Date with month it may still show error even with same year as in L02C1609XXXX and L02C1611XXXXX........ why because boot file version(*Date) must be higher or equal in order to initialize burning or erase flash.
In short check board date, it must not be higher than firmware date version
NB: FOLLOW L02B GUIDE TO INSTALL LTE GENERIC DRIVERS AND WTPTP DRIVERS
LETS START
FILES NEEDED
1. L02BUganda1_M023_LCD_V003_8801_2.144.000_20161117_1030_SIGN
2. Airtel_M023_Chiva_L02C_v001_2.95.000_20141127_1630
Some of the ways to downgrade is to disconnect during erase flash, this damages the  bootloader files such that subsequent flashing somehow modem now permit any firmware boot files. In this case you can now flash any firmware of your choice to open-line modem
1. Files
![[Image: TUT1.png]](https://s4.postimg.org/vszceu34d/TUT1.png)
2. A.Load Files in SWDownloader, Tick manually RBL1 and RBLR check box(all files must be checked)
  B. In Options, check erase all flash,
  C. Click on green button to start
  D. Connect Mifi to pc without battery to start, i assume you have installed driver using L02B guide for WTPTP and LTE generic drivers
E. Disconnect at 3-6% erasing flash, it this skipped you fast, repeat this step and disconnect at before 10% erase flash
![[Image: TUT2.png]](https://s24.postimg.org/906mcw3r9/TUT2.png)
![[Image: TUT3.png]](https://s24.postimg.org/7z6dnrmrp/TUT3.png)
![[Image: TUT4_1.png]](https://s10.postimg.org/fqly9lzt5/TUT4_1.png)
![[Image: TUT5.png]](https://s10.postimg.org/yk7r6ly15/TUT5.png)
3. LETS FLASH THE OPENLINE MODIFIED FIRMWARE
This is an Airtel Chiva L02C firmware modified originally and LED modified With OSLO and ReliableData from L02B Uganda firmware to enable LCD and enhance MEP settings. Please dont ask for further explanation or why. OSLO controls LCD and ReliableData is the main file responsible for Security(Unlock)
Flash this firmware to Openline, allow flashing to proceed and finish
Connect mifi to pc and login to IP address, IP address changes depending on firmware, Check in Network Settings Properties of Network For IP address and Login with username as "admin"and password as "admin".
![[Image: TUT6.png]](https://s23.postimg.org/db5wsn53f/TUT6.png)
![[Image: TUT9.png]](https://s23.postimg.org/e1ymyf7gr/TUT9.png)
Now insert non default sim card, insert battery now and power On
Initial boot logo unavailable but LCD should power on after some mins
Connect Modem to PC, it displays PH NET PIN---
Login to Modem
Click on Internet Tab
Locate MEP SETTINGS
UNLOCK CODE IS 123456 TO UNLOCK PN
![[Image: tapatalk_1499794478714.jpg]](https://s12.postimg.org/bbkcfa8t9/tapatalk_1499794478714.jpg)
![[Image: tapatalk_1499794481575.jpg]](https://s23.postimg.org/4fqstis9n/tapatalk_1499794481575.jpg)
Searching for Signal---3g Network displayed..................Unlock Done
NB----After Openline you need to configure wiireless Settings, some users may have difficulty connecting to Wifi
Do manual configuration of wireless settings to function as normal
Some 4g networks are not supported due to downgrade firmware used to Open line, In future newer firmware will improve 4g problem
NB
after every reset, mifi displays PH-NET PIN, login and in Internet Tab, mep settings Unlock pn with 123456 to access network again, dont forget
Please stop asking me so many questions in private chats, I cant help everybody, because i dont have all the variance to make guide
THE NEWER L02C WITH 17XXXXXX HAS BEEN SUCCESSFULLY UNLOCKED WITH IMEI METHOD, Will Upload soon
All done by droidmobitech
<TEAM DMT>
THANKS TO RAMYCIN FOR DEVICE FOR UNLOCK/TRIAL
LINK
https://www.dropbox.com/s/94r2e30z3v9orm...t.rar?dl=0
Password-----Droid098
This post was last modified: 02-11-2017, 09:29 PM by droidmobitech.
15-07-2017, 06:24 PM
please can you send the unlocking by imei method to my private message or whatsapp line 233238663222 or email popzeggey@gmail.com..thank you very much
This post was last modified: 15-07-2017, 06:24 PM by popzeggey.
17-07-2017, 06:43 PM
Sent from my SM-N900T using Tapatalk
This post was last modified: 18-07-2017, 03:26 AM by droidmobitech.
21-07-2017, 10:02 AM
thankyou..
21-07-2017, 06:50 PM
(21-07-2017, 06:41 PM)mrd1901 Hi Guys,
really need your help. after install usb driver i stuck at connect mifi (battery remove) with note "sendpreamble failed in gettdeviceboot type".
Thanks a lot guys.
Regards,
MRD
First check the drivers
1. Two drivers are installed
A. Wtptp driver
B. Marvell AT interface (LTE Generic Drivers manually)
Check to be sure if both are properly installed....I referred users to watch L02B steps to install drivers
2. Change USB port and test modem drivers before proceeding on operation as described in L02B guide
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