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[Q] P780 bricked after flashing (wrong) ROM - doesn't boot

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Re-Mi
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Hi All,

This also solved my problem (maybe we should add a thread for post-0414 phones.)

With the modified file we can flash multiple roms (checked about 5 now). But I got a question. How to flash a custom recovery on this phone. I tried everything and almost every recovery(CH/ ROW etc etc) i could find, but the phone keeps booting into the normal recovery and not into TRWP, CWM, (and an other one i forgot the name ).

Tried to install it with MobileUncleTools, but i cannot get a custom recovery on the phone.

Anyone got a solution for this (except flashing again, (not a big problem but without would be beter)

Greetz,

Michel

btw casaben what did you mean with linking uboot to the LK file, the roms i tried works without that (i think) because i really don't know how and why ? (and i'm asking to learn that, so i hope you can explain why and how)
 
stympy
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(Last edited by stympy; 8th July 2014 at 10:04 AM.)
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Quote:
Originally Posted by Re-Mi View Post
Hi All,

This also solved my problem (maybe we should add a thread for post-0414 phones.)

With the modified file we can flash multiple roms (checked about 5 now). But I got a question. How to flash a custom recovery on this phone. I tried everything and almost every recovery(CH/ ROW etc etc) i could find, but the phone keeps booting into the normal recovery and not into TRWP, CWM, (and an other one i forgot the name ).

Tried to install it with MobileUncleTools, but i cannot get a custom recovery on the phone.

Anyone got a solution for this (except flashing again, (not a big problem but without would be beter)

Greetz,

Michel

btw casaben what did you mean with linking uboot to the LK file, the roms i tried works without that (i think) because i really don't know how and why ? (and i'm asking to learn that, so i hope you can explain why and how)
Hi. What ROM do you use?
is it rooted ?
Custom recovery instal depends on that.
 
Re-Mi
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Quote:
Originally Posted by stympy View Post
Hi. What ROM do you use?
Custom recovery instal depends on that.

Hi I'm running P780 4.4.2 1423 ST Pure GAPPS ROOT (found on needrom),

i know this rom doesn't have custom recovery but i hoped it could be installed after flashing.

Could we switch the recovery.img before flashing roms on the phone just like we have to do with the preloader ?

Or only flash the recovery.img with the flashing tools ?

Greetz
 
stympy
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Quote:
Originally Posted by Re-Mi View Post
Hi I'm running P780 4.4.2 1423 ST Pure GAPPS ROOT (found on needrom),

i know this rom doesn't have custom recovery but i hoped it could be installed after flashing.

Could we switch the recovery.img before flashing roms on the phone just like we have to do with the preloader ?

Or only flash the recovery.img with the flashing tools ?

Greetz
Yes you could. Just replace stock recovery with custom one.
I recomend TWRP from life ROM that you will find here:https://drive.google.com/folderview?...TA&usp=sharing
Extract from archive CHINA ROM - RECOVERY.IMG; COPY ; replace your stock recovery with this one;
Flash;
Enjoy.

---------- Post added at 10:36 AM ---------- Previous post was at 10:33 AM ----------

Quote:
Originally Posted by oberst View Post
PROBLEM SOLVED / Thx casaben

Hello,

today i tried to flash my P780. The Build-Number of my phone was P780_S136_140306.
I flashed ROM P780_S135_130917_rooted_twrp_gapps with Smart Phone Tools and after that my phone was dead.
I flashed this ROM because i want to flash the ROM AOSP-4.4.2-v.1.8 after that.

Thx stympy for your tutorial to bring back my phone back to life!

I donīt know if my phone is chinese or not. There is no date on the battery, only chinese letters.

I need help to flash ROM AOSP-4.4.2-v.1.8.

Thx
So.. lets see.. Your phone is chinese, thats for sure.
On your box that came with your phone you should see the date of fabrication like 04.2014 with some chinese letters.
This tipe of phones are called SPEED like this: Lenovo P780 Speed. They have done some modifications.
After you flashed your stock Firmware, must do this steps:
1. install MobileUncleTool from google play;
2. download a rooting tool; the firmware must be rooted;
3. download custom recovery TWRP or CWM;
4. put the custom firmware on your internal storage;
5. open Mobile UncleTool; go to recovery update select recovery and flash(update).
6. tell me iff something goes wrong;
The Following User Says Thank You to stympy For This Useful Post: [ Click to Expand ]
 
anilyarki
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Default Reboot Loop

  • Phone Model : Lenovo P780 ROW 8GB version
  • Country of origin : India
  • Current Firmware : P780_8G_ROW_S124_140403
What went wrong : I was trying to install Lewa OS stright from Lea OS website via custom TWRP recovery. Took a nandroid backup for precaution and then installed LEWA OS.
Installation was not succesfull as it tried to repartition phone memory. Any ways fortunately i had the backup handy so i restored the phone to its early state. Restoration was also succesfull. However when i rebooted the phone after restoration it stuck in reboot loop.
Symptoms:
  • Phone vibrates with no display
  • NO boot animation. its gone
What Works :
  • I can flash custom TWRP or CWM recovery on the phone.
  • Can use the phone normaly if i use the hardware reset button to manually switch off the phone completly
  • Can install any compatible ROM, however al end up with same reboot loop when first turned on.
If some one could guide me on how to repartion or reformat the phone from scratch using any flashing tool, i will be thankful !
 
stympy
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(Last edited by stympy; 12th July 2014 at 06:49 AM.)
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Quote:
Originally Posted by anilyarki View Post
  • Phone Model : Lenovo P780 ROW 8GB version
  • Country of origin : India
  • Current Firmware : P780_8G_ROW_S124_140403
What went wrong : I was trying to install Lewa OS stright from Lea OS website via custom TWRP recovery. Took a nandroid backup for precaution and then installed LEWA OS.
Installation was not succesfull as it tried to repartition phone memory. Any ways fortunately i had the backup handy so i restored the phone to its early state. Restoration was also succesfull. However when i rebooted the phone after restoration it stuck in reboot loop.
Symptoms:
  • Phone vibrates with no display
  • NO boot animation. its gone
What Works :
  • I can flash custom TWRP or CWM recovery on the phone.
  • Can use the phone normaly if i use the hardware reset button to manually switch off the phone completly
  • Can install any compatible ROM, however al end up with same reboot loop when first turned on.
If some one could guide me on how to repartion or reformat the phone from scratch using any flashing tool, i will be thankful !
HI. Look what you must do:
1. Download your firmware from the development posts and flash with Flash Tools . Reboot.
2. Install Mobileuncletools
3. Download Latest Framaroot and root your phone
4. Install custom Recovery TWRP or CWM.
5. Restore your Backup.
6. Tell me if something goes wrong.
7. Good luck.

Sent from my Lenovo P780 using LiFe v.07 and TWRP 2.6.3.0.
 
victor152
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(Last edited by victor152; 26th July 2014 at 12:55 PM.)
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Trying to restore my backup, cuz bricked the phone.

On the battery i have on the bottom sth like: 140321

Here what flash tool shows me:
(preloader replaced from post above) imgur.com/XgeK6Na (below ten posts)

Any ideas guys?

#Edit:
fixed

High speed, with battery, P780_S136_140306_Lang.7z and works!
 
evgenisco
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Thumbs up Man, I love you!!

I had exactly the same problem and your post here and research done has saved my phone, after trying for two days to fix it.
My phone too is back to life!!
Thank you a million casaben and all involved in his p780 issue!



Quote:
Originally Posted by casaben View Post
Hi,

The phone is back to life!
So, here is what I did: thanks to user stympy, who gave some valuable advise, and was actually on the right track.
The phones with a production date starting from 03.2014 have an updated PRELOADER. If you try to use flashing the PRELOADER of any other rom here on these phones, you'll end up like me.
The production date, I think, is printed on the battery (if you have a Chinese model at least).
YOU CANNOT FLASH A PRELOADER OF THE ROMS ON THE FORUM ON PHONES WITH A PRODUCTION DATE 03.2014 OR LATER (at this moment)

So, I found on a Russian forum (sorry XDA but for Lenovo there is a lot more to find on 4PDA than here), a backup of the correct,new preloader.
- I took the P780_S129_130710 ROM, and replaced the preloader.bin with the one in this rom.
- Next, deleted the checksum.ini file in the rom to avoid errors
- Open SPFT, selected the ROM, made sure PRELOADER entry was pointing to the correct preloader.bin
- USB disconnected, I clicked Download with DA DL All with checksum activated
- Plugged in USB
- Flashed without issue, disconnected, and voila, boot!!!

Well, that gave me a Chinese interface, but some screenshot tutorials enabled me to switch it to English.
I luckily took a backup with MobileUncleTools of my IMEI, since that was gone.
Phone seems to work normal, with 2 SIM cards, but a lot of Chinese bloatware.

While I was at it in SPFT, I tried to flash pre-rooted, or ROW versions, but that was unsuccessful so far. Always the good old 4032 error, although I updated the preloader, or some other failures.

However, the problem I'm trying to fight now, is the recovery mode. Can't backup (and not going to try flash ROM through recovery), since I can't mount /data, /emmc, and other crucial partitions. I'm using CWM. My goal is to flash the SLX ROM or any other rom with less bloatware, in English, and stable.

Update : Flashed :
- P780_S135_130917_rooted_twrp_gapps + modified preloader and works fine: had to manually link the UBOOT to the LK file (SPFT did not do it by itself)
- VIBEUI_V1.5_1419_5_DEV_P780_rooted_twrp_gapps + modified preloader and works fine : same problem with UBOOT
- Some other (Chinese) versions. ALWAYS put in the preloader file I attached, and everything went smooth and OK

Decided to not use CWM anymore, it's buggy. I use the built in TWRP recovery, and that works like a charm. No issues whatsoever.
Decided to keep VIBEUI_V1.5_1419_5_DEV_P780_rooted_twrp_gapps, but my preferred one until now was just the old stock version.
Simple and good

I've attached the preloader.bin I used (use at your own risk!), I guess it might come in handy for all of you with the same problem
Note that this particular preloader worked for me on a Chinese model 4Gb, production date 15/03/2014

And thanks again to Stympy for all the help!

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bricked, flash, p780, rom
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