Important: All changes at your own risk. Make Backup!
You must have proper USB-Driver installed to work! If not you can download it on my Link
Listen: The CWM Recovery has a flipped Screen (180°) It was developed by Carliv/Xda Developer with best reputation!! The Recovery works without Misstakes!!
@all A850s User,
Hello again,
I have generated/adapted a "new" ROM for the Lenovo A850s based on the uploaded Original ROM from Pocaropa. (v. 06.06.2014)
All nessessary Files you can Download here:
[Only registered and activated users can see links Click here to register]
Questions:
1. Is your Phone rootet and proper USB-Driver installed?
Answer: Do it with Framaroot 1.9. (check third Item and reboot!)
USB-Driver you can download on my Link!
2. Have you installed CWM-Recovery?
Answer: Download the CWM Images and flash it with MobileUncle Tools. You can flash it with SP Flash Tools with the patched Boot images. Use
your Scatter generated by MTK Droid Tools - check only boot.img and recovery.img.
3. Make a backup from your Phone with CWM. Be sure, that you have checked SDCard under Settings/Storage!
In MobileUncle App there is a boot to recovery!
4. After your Backup is finished switch your Phone off.
5. Your Phone has RAM, Internal- (only 1GB) and Phone-Storage. The Problem is, that the Items would not displayed correctly. Only Root-Explorer and Storage Analyser shows the correct Sizes. Your Phone-Storage is displayed with 7,9GB - but only 1,7GB is available.
So, i say to me, the Phone-Storage is bad - you can´t install any Apps. Then I changed this - and gave the 1,5GB to internal Storage. The internal Storage has yet 2,5GB to install apps. The Phone Storage was decreased to about 120MB. Displayed is after the change 7,9GB also. I don´t no why. O.K. The two Apps show you the correct size.
6. Flash the changed ROM. Make a Folder on D:\ ! ( Lenovo or A850s)
Download the ROM and MTK DroidTools and SP Flash Tools v.5 and place it in this Folder. Extract it.
Switch your Phone off. (Before you checked USB-Debugging on Phone is on!)
Start in the extracted SP Flash Tools Folder v.5 and run FlashTools.exe as Administrator! (Right click on the File)
Select
my Scatter-File - included in the extracted ROM. Check all Boxes and select
Firmware Upgrade. Before you checked the DA/DL Box. See Pictures!
Pull out the Battery from your Phone and disconnect it from PC. Then select Download. Proof before, that
Firmware Upgrade is displayed!!
After click on the dowload Button, connect your USB Cable to PC and quick put the Battery inside.
You must see some color lines - blue, grey and green. The Flash from the new ROM start with yellow. After Flash, the Programm check the Flash Progress. If all is correct, you receive a small Box with a green Circle. You can disconnect your Phone an close the Back Cover.
Press
Power & Vol + together for about 10sec. You are in Recovery.
Select Wipe menue and wipe only cache. With swype from right to left you go back
Touch Backup - Advanced Restore and restore only User Data. When finished you go back and reboot Phone. It takes a while. If received damaged Phone Storage or so, tap on the Message select Format. The Phone Storage (about 120MB) will be formatted!
Voila you are in the newer ROM with more Internal Space.
Greetings
Louis777