[HTC Pico (Explorer)] Paramasivan Eswaran:
How to install CyanogenMod 12.1. and Google Apps in HTC Pico (HTC Explorer A310e) ?

Credits:

Paramasivan Eswaran (பரமசிவன் ஈஸ்வரன்)

Industrial Engineer

How to install CyanogenMod 12.1. and Google Apps in HTC Pico (HTC Explorer A310e) - Detailed Instructions:

0.

Pre-requirements:

0.1. Rooted HTC Pico (HTC Explorer A310e) mobile phone device.

0.2. PC with Windows 7 OS (Don's use Windows 8 and above. They doesn't allow you to easily install third-party drivers and by default driver signature had been disabled in that OS's).

0.3. Install Java in your PC (Both 32-bit and 64-bit) and followed by install HTC Pico USB drivers.

0.4. Install MiniTool Partition Wizard Ultimate_10.2.1 in your PC.

0.5. Class 6 or Class 10 SD-card (Minimum 4GB) for best performance.

0.6. ADB files (It is a zip file. After extracting it shoud contains the following 4 files : adb.exe, AdbWinApi.dll, AdbWinUsbApi.dll, fastboot.exe) along with Team Win Recovery Project (TWRP)_2.8.7.0 .img file of size about 7.34 MB (7,524 KB).

0.7. CyanogenMod 12.1_HTC Pico_Unofficial_2015-06-02.zip Custom ROM file of size about 248 MB (2,54,066 KB)

0.8. Google Apps for Android 5.0_HTC Pico.zip file of size about 29.7 MB (30,427 KB)

1. Unlock your HTC Pico Phone's bootloader using Windows 7 OS.

2. You must create 2 partition your SD-card and must by launching MiniTool Partition Wizard Ultimate_10.2.1 as follows:

2.1. First delete your entire SD-card. After deleting it will show "Unallocated".

2.2. Make a first partition of FAT32 file system of some size with 2.2 GB remaining size. (Note: This FAT32 partition is the your feature External, Removable SD-Card. It should be the first partition. Otherwise Windows OS cannot read or recognize your SD-Card while connecting them in to your PC)

2.3. Make a second partition of Ext4 file system of 1GB (Minimum size) for SD-DATA.

2.4. Make a third partition of Ext4 file system of 1.2GB (Minimum size) for SD-SYSTEM.

2.5. Click Apply. After successfully partitioned exit from MiniTool Partition Wizard Ultimate_10.2.1.

3. Copy the following files in your SD-Card: (1) CyanogenMod 12.1_HTC Pico_Unofficial_2015-06-02.zip Custom ROM file, and (2) Google Apps for Android 5.0_HTC Pico.zip file.

4. Flash the Team Win Recovery Project (TWRP) recovery 2.8.5.0 in to your phone as follows:

4.1. By Pressing "Home + Volume Down" buttons, enter into boot menu and then select "fastboot"

4.2. Connect your phone to PC via USB cable.

4.3. In your Windows 7 PC, navigate to the folder that contains the adb files. Paste the TWRP recovery .img image file in that folder.

4.4. Simply click the recovery.bat file in the ADB file folder if exists OR do the following procedure:

By pressing "Shift button in the keyboard + Right click button in the mouse" simultaneously, Open the CMD in that corresponding folder or simply click the Command Prompt shortcut file if exists. In the CMD, enter the following commands to flash the TWRP recovery 2.8.5.0 into your phone:

fastboot flash recovery recovery.img

fastboot reboot

Note:

Where, "recovery.img" is the file name of the recovery along with its filetype extension. It may change as per the file name of the .img file. So, "Enter the name as in that of the name in the .img file".

5. After flashing TWRP, disconnect your phone from PC. And again enter into bootloader menu in your phone. This time select "Recovery" and the phone will boot into TWRP recovery. Allow system partition modifications by swiping it in TWRP start-up page.

6. Click Wipe -> Select Partitions to Wipe: Check (1) Dalvik Cache, (2) Cache, (3) Data, (4) Android Secure, and (5) System -> Swipe to Wipe

7. Come back to TWRP home and Click Reboot -> Click Bootloader. Now your phone will again boot in to the bootloader menu.

8. Again select Fastboot option. Do the steps 4.4 and 5 for flashing the recovery once again. (This steps are required to stablize your new custom ROM that require f2fs file systems for /data and /system partitions to properly run without fail)

9. Now Convert , your /data and /system partitions from ext4 to f2fs file systems. To do this,

9.1. Click Wipe -> Click Advanced Wipe -> Select Partitions to Wipe: Check Data -> Click Repair or Change File System -> Click F2FS -> Swipe to change. (Note: During formating this /data partition to f2fs file system, some phones says Error. You just ignore it! )

9.2. Come back to TWRP home and again, Click Wipe -> Click Advanced Wipe -> Select Partitions to Wipe: Check System-> Click Repair or Change File System -> Click F2FS -> Swipe to change.

10. After converting do all wipes except SD-Card. To do this : Come back to TWRP home and Click Wipe -> Select Partitions to Wipe: Check (1) Dalvic Cache, (2) Cache, (3) Data, (4) SD-Ext, (5) Android Secure, and (6) System -> Swipe to Wipe

11. Now insert your SD-Card into the phone. In the TWRP home, Click Install -> Select SD-Card (or navigate to the directory that the contains the custom ROM's .zip file) -> Click the CyanogenMod 12.1_HTC Pico_Unofficial_2015-06-02.zip Custom ROM file -> Swipe to Flash the custom ROM file. Flashing will take long so just wait.

12. After completing the installation of the flash .zip file, comeback to TWRP home, Click Reboot -> Reboot Bootloader. And your phone will Reboot back to Bootloader once again. This reboot is for flashing the boot.img image file to your phone to avoid Boot Loop and Struck at HTC Splash Screen after the flashing process. To do this :

12.1. Select Fastboot option in your phone.

12.2. Connect your phone to PC via USB cable.

12.3. In your Windows 7 PC, extract he CyanogenMod 12.1_HTC Pico_Unofficial_2015-06-02.zip Custom ROM file.

12.4. Copy "boot.img" file and once again navigate to the folder that contains the adb files.

12.5. Paste the boot.img image file in that folder.

12.6. (Before doing this step, please read the step 13) Simply click the boot.bat file in the ADB file folder if exists OR do the following procedure:

By pressing "Shift button in the keyboard + Right click button in the mouse" simultaneously, Open the CMD in that corresponding folder or simply click the Command Prompt shortcut file if exists. In the CMD, enter the following commands to flash the boot image file into your phone:

fastboot flash boot boot.img

fastboot reboot

13. While your phone starts, suddenly press "Home + Volume Down" buttons, to enter into bootloader menu to flash G-Apps (Google Applications) that contains applications like Google Play Store, Google Play Services, Goole Framework and other 8 applications. DON'T WORRY if you miss this step, you can flash it in the recovery after you setup the custom ROM.

14. In the bootloader menu, Select Recovery. And your phone will boot into TWRP recovery. Allow system partition modifications by swiping it in TWRP start-up page if it asks.

16. In the TWRP home, Click Install -> Select SD-Card (or navigate to the directory that the contains the custom ROM's .zip file) -> Click the Google Apps for Android 5.0_HTC Pico.zip G-Apps file -> Swipe to Flash the G-Apps file.

17. Swipe to Reboot to the system.

10.That's it. After some time your phone will enter in to the Setup menu for the NEW custom ROM that you had flashed. Enjoy. Bye! Bye!!

CyanogenMod 12.1. - Android 5.1.x Lollipop Custom ROM For HTC Pico (HTC Explorer A310e) - Details:

ROM OS Version: 5.1.1 Lollipop

ROM Kernel: Linux 3.0.x

ROM Firmware Required: Rooted

Based On: CyanogenMod

Version Information:

Status: Beta

Current Beta Version: 1

Beta Created Date: 2014-11-19

Beta Release Date: 2015-03-03

Last Updated Date: 2015-06-11

REFERENCE:

(1) "How to flash CyanogenMod 12" by BCCCPCEKCAHET, Member in XDA-Developer

https://xdaforums.com/htc-explorer/general/guide-how-to-flash-cyanogenmod-12-t3060293