[Q] AOSP Based Kitkat ROM for Lenovo ROW P780 8GB? [SOLVED] - Lenovo P780

Hi,
How to install a KitKat Based Light Weight ROM such as AOSP v 1.8 on the ROW Model of Lenovo P780 8GB RAM which is currently rooted, running SLXROM v25e with TWRP Recovery?
There are a bunch of ROMs which are now being developed only for the KIT (CN) Version (for example AOSP 1.8) and the information about converting an 8GB RAM ROW Version to KIT (CN) Version is scattered and it is not clear whether it is possible?
In addition, there seems to be a ROM based on Android L and that's also developed for the KIT (CN) base. - has anyone given it a try?
Most of the development is happening on Russian Forums and the procedure to adopted is not entirely clear even when translated to English
So, here are a few queries which I'm looking to clarify and consolidate through this Q&A thread:
1. Are there any AOSP based KITKAT (4.4) ROMs available for Lenovo P780 ROW 8GB Model?
2. If not, then to install these ROMs, we need to first convert the device from ROW to CN. I'm guessing that the conversion can only be done flashing the ROM using SP Tools. Is that correct?
3. I'm also guessing that a Chinese Stock ROM cannot be flashed on the 8GB RAM ROW device because the Chinese Stock ROMs were developed for 4GB RAM and doing this could cause bootloops and other issues in partitioning. Correct?
4. What is the best way to convert a ROW Version to KIT (CN) Version especially for P780 8GB RAM device, with root and TWRP Recovery?
Although the community for 8GB RAM P780 users may not be as large as the 4GB RAM Model, it's very much in existence and the number of users adopting the 8GB RAM device is expected to be higher recently.
Regards
GxxA

---

In FAQ section of custom roms based on KitKat 4.4.2 says that if you have 4gb, you need first to install XVibe v3, than throw TWRP install custom rom...About 8gbROW version says:
"Поставить любую официальную китайскую прошивку через флеш тул(Рекомендуется для аппаратов 8GB)- придется подкидывать рекавери из XVIBE0.3 перед прошивкой."
If I understand this right, you need to flash stock chinese rom for 8gb with changed stock recovery with recovery from XVibe rom (twrp), than flash custom rom (AOSP; Android L...)
You can always ask on Lenovo Russia forum using google translate and original english question, they will anwser...
P.S. I have 4GB ROW, so I'm not 100% sure about any of your question...

---

Dear All -
OK... Here's my first attempt.
1. Installed USB Drivers, SP Flash Tool Driver, Used the SP Flash Tool to Write P780_S308_130814 (Chinese Stock ROM) with "Firmware -> Upgrade" option -- Success
Am assuming now my phone is successfully converted from ROW to CN (KIT). I checked available storage, it reflected 8GB, so it's good.
2. Did Framaroot with SuperSU, Installed MobileTools, Updated Recovery to TWRP 2440 (p780-twrp-en-asia-recovery.img) -- Success
This was done to install the X-VIBE ROM.
3. Installed X-VIBE ROM (clean_x-vibe) as suggested by using the TWRP Restore feature -- Success
Was able to successfully boot into X-VIBE ROM as well.
4. After installing the X-VIBE ROM, went back into Recovery, Flashed with AOSP 4.4.2 v.1.8.zip, Applied Wipe Dalvik/Cache and Rebooted.
!! At this point, the device went into Bootoop at Start Screen !!
Just Reset the Phone and Reflashed a Stock ROM with SP Flash Tool once again and everything is back to normal as it was...
But still want to figure out why did the Bootloop occur and how to get pass through to install AOSP 4.4.2 v 1.8 on my 8GB P780 Device. Any suggestions?

---

Well, had a breakthrough today and was successful in Flashing the AOSP 4.4.2 ROM on Lenovo P780 8GB RAM ROW Version.
1. Installed USB Drivers, SP Flash Tool Driver, Used the SP Flash Tool to Write P780_S308_130814 (Chinese Stock ROM) with "Firmware -> Upgrade" option -- Success
2. Did Framaroot with SuperSU, Installed MobileTools, Updated Recovery to TWRP 2440 (p780-twrp-en-asia-recovery.img) -- Success
3. Installed X-VIBE ROM (clean_x-vibe) as suggested by using the TWRP "Restore" feature (Do Not USE Install!) -- Success
Here comes the tricky part, earlier, I tried flashing AOSP 4.4.2 ROM directly over the X-VIBE ROM without cleaning it up. That's where the problem was. Instead,
4. Logon to TWRP Recovery, Choose Wipe and Execute ALL Wipe Commands (Dalvik, Cache, Factory Reset, Internal, Secure, etc.). -- Success
(Note: Do Not Wipe the External Memory as it's your SD Card.)
5. Now, Go Back and Flash the AOSP 4.4.2 ROM, Apply Wipe Dalvik/Cache and Reboot -- Success
Your Lenovo P780 system should now be running 4.4.2. I used AOSP 1.7 Version as it seemed much more stable compared to AOSP 1.8 (AOSP 1.8 has some bugs - Front Camera causes exception, issues with Google Apps in Communicating with Google Servers, etc.). AOSP ROM is light weight and has a buttery User Experience compared to the Sticky UI in Stock Kitkat ROMs.
Few Suggestions:
Replace the Modem that comes with AOSP 1.8 with the Stock Modem of your choice. I installed the Modem that came with S220 ROW (modem_P780_V104_S220). This worked better for me!
I intuitively turned OFF "Wi-Fi optimization" as I felt it causes battery to drain faster for some reason! I've been using this ROM for over 10 hours with Wifi turned ON and the battery has hardly reduced by 5 - 6%.
Another suggestion that I adopted was to install Xposed Installer and install Gravity Box for KK - this provides a lot more customization to help your productivity.
If you ever felt you wanted to revert to the ROW version, just flash the Stock ROW Version ROM (P780_8G_ROW_S124_140403) through SP Flash Tool.
Regards
GxxA.

---

GxxA said:
Well, had a breakthrough today and was successful in Flashing the AOSP 4.4.2 ROM on Lenovo P780 8GB RAM ROW Version.
1. Installed USB Drivers, SP Flash Tool Driver, Used the SP Flash Tool to Write P780_S308_130814 (Chinese Stock ROM) with "Firmware -> Upgrade" option -- Success
2. Did Framaroot with SuperSU, Installed MobileTools, Updated Recovery to TWRP 2440 (p780-twrp-en-asia-recovery.img) -- Success
3. Installed X-VIBE ROM (clean_x-vibe) as suggested by using the TWRP "Restore" feature (Do Not USE Install!) -- Success
Here comes the tricky part, earlier, I tried flashing AOSP 4.4.2 ROM directly over the X-VIBE ROM without cleaning it up. That's where the problem was. Instead,
4. Logon to TWRP Recovery, Choose Wipe and Execute ALL Wipe Commands (Dalvik, Cache, Factory Reset, Internal, Secure, etc.). -- Success
(Note: Do Not Wipe the External Memory as it's your SD Card.)
5. Now, Go Back and Flash the AOSP 4.4.2 ROM, Apply Wipe Dalvik/Cache and Reboot -- Success
Your Lenovo P780 system should now be running 4.4.2. I used AOSP 1.7 Version as it seemed much more stable compared to AOSP 1.8 (AOSP 1.8 has some bugs - Front Camera causes exception, issues with Google Apps in Communicating with Google Servers, etc.). AOSP ROM is light weight and has a buttery User Experience compared to the Sticky UI in Stock Kitkat ROMs.
Few Suggestions:
Replace the Modem that comes with AOSP 1.8 with the Stock Modem of your choice. I installed the Modem that came with S220 ROW (modem_P780_V104_S220). This worked better for me!
I intuitively turned OFF "Wi-Fi optimization" as I felt it causes battery to drain faster for some reason! I've been using this ROM for over 10 hours with Wifi turned ON and the battery has hardly reduced by 5 - 6%.
Another suggestion that I adopted was to install Xposed Installer and install Gravity Box for KK - this provides a lot more customization to help your productivity.
If you ever felt you wanted to revert to the ROW version, just flash the Stock ROW Version ROM (P780_8G_ROW_S124_140403) through SP Flash Tool.
Regards
GxxA.
Click to expand...
Click to collapse
Hi can you please share a link to download AOSP 1.7 please. I am not able to locate this older version.

---

GxxA said:
Well, had a breakthrough today and was successful in Flashing the AOSP 4.4.2 ROM on Lenovo P780 8GB RAM ROW Version.
1. Installed USB Drivers, SP Flash Tool Driver, Used the SP Flash Tool to Write P780_S308_130814 (Chinese Stock ROM) with "Firmware -> Upgrade" option -- Success
2. Did Framaroot with SuperSU, Installed MobileTools, Updated Recovery to TWRP 2440 (p780-twrp-en-asia-recovery.img) -- Success
3. Installed X-VIBE ROM (clean_x-vibe) as suggested by using the TWRP "Restore" feature (Do Not USE Install!) -- Success
Here comes the tricky part, earlier, I tried flashing AOSP 4.4.2 ROM directly over the X-VIBE ROM without cleaning it up. That's where the problem was. Instead,
4. Logon to TWRP Recovery, Choose Wipe and Execute ALL Wipe Commands (Dalvik, Cache, Factory Reset, Internal, Secure, etc.). -- Success
(Note: Do Not Wipe the External Memory as it's your SD Card.)
5. Now, Go Back and Flash the AOSP 4.4.2 ROM, Apply Wipe Dalvik/Cache and Reboot -- Success
Your Lenovo P780 system should now be running 4.4.2. I used AOSP 1.7 Version as it seemed much more stable compared to AOSP 1.8 (AOSP 1.8 has some bugs - Front Camera causes exception, issues with Google Apps in Communicating with Google Servers, etc.). AOSP ROM is light weight and has a buttery User Experience compared to the Sticky UI in Stock Kitkat ROMs.
Few Suggestions:
Replace the Modem that comes with AOSP 1.8 with the Stock Modem of your choice. I installed the Modem that came with S220 ROW (modem_P780_V104_S220). This worked better for me!
I intuitively turned OFF "Wi-Fi optimization" as I felt it causes battery to drain faster for some reason! I've been using this ROM for over 10 hours with Wifi turned ON and the battery has hardly reduced by 5 - 6%.
Another suggestion that I adopted was to install Xposed Installer and install Gravity Box for KK - this provides a lot more customization to help your productivity.
If you ever felt you wanted to revert to the ROW version, just flash the Stock ROW Version ROM (P780_8G_ROW_S124_140403) through SP Flash Tool.
Regards
GxxA.
Click to expand...
Click to collapse
AOSP 1.7 is row or kit?

---

unable to flash alice rom cn on my 8gb rom
please help me....