android file transfer on linux (mtp)

mtp through kde is not working properly, so use:

 sudo apt-get install android-file-transfer

Lenovo A806 GApps installation

http://forum.xda-developers.com/showthread.php?t=2397942

Mini modular package. "pa_gapps-modular-mini-4.4.4-20150117-signed.zip"

Lenovo A806 New rom install (via TWRP)

Copy "VIBEUI_V2.0_1501_7.80.1_DEV_A806_NK_W_07B8.zip" file to Internal storage.
Reboot to recovery, wipe cache, dalvik, system, data.
Reboot again into recovery.
Unmount /cache.
Install ZIP.

Mount /system.

Rename /system/reovery-from-boot.p into something else does not work, had to reflash recovery. Finally deleted this file.

Reboot System, Install SuperSU? -> YES.

Lenovo A806 Recovery install

With SP Flash Tool: switch ON the option "DA DL All with Checksum".
Mark "recovery", select recovery.img from TWRP_Recovery.

The phone must be powered off, no battery. Click "Download", insert the phone cable.

All sound buttons + power to switch on the phone (cable ejected).

Lenovo A806 ROM flash readback

The phone arrived from China with a buggy altered firmware:
Hardware : MT6592
Model : Lenovo A806
Build number : VIBEUI_V2.0_9432_ST_A806
Build date UTC : 20140807-112632
Android  v : 4.4.2
Baseband v: A806.V30, 2014/07/31 14:53
Kernel v : 3.4.67 (buildslave@xmws58) (gcc version 4.7 (GCC) ) #1 SMP  Thu Aug 7 19:24:27 CST 2014

To backup the original firmware you need:

1) Preloader driver for MTK
2) MTK droid tools
3) SP flash tool

Backup process:
1) Get scatter file with MTK droid tool and phone switched on, debugging enabled
2) Eject the cable, power off the phone, eject the battery
3) Open SP flash tool, select the scatter file, go to the "Readback" tab, add new, put the number from the "Cache" partition start into the "Size" field.
4) Press "start readback", insert the battery, attach the cable.

I got a 1.4GB ROM file in 32 minutes.

http://www.theandroidhow.com/2014/05/how-to-backup-rom-dump-mtk-android.html
http://forum.xda-developers.com/showpost.php?p=44509214&postcount=407

Android backup

http://www.android.gs/how-to-update-the-lg-optimus-one-p500-with-cyanogen-mod-9-firmware/ http://www.android.gs/download-call-logs-backup-restore-app-for-android/ http://www.android.gs/download-sms-backup-restore-app-for-android/

LG Optimus One P500 factory menu

Working solution for GPS problem for LG P500 Optimus after update to Gingerbread lies in hidden menu which can be opened with 3845#*500# combination in Dialer. Then choose GPS Test > gpsApp Main Menu > Settings > GPS Type and choose Standalone instead of A-GPS (as shown on picture).

http://muj.trus.cz/post/9622985470/working-solution-for-gps-problem-for-lg-p500