Sebaulbausb, I've read about mtk65xx as being declared "unbrickable devices", somehow you've managed to cross that rule. I think it might be hw issue (btw I'm from Buc, too). I th9nk I've managed to flash NVRAM, by using "write memory" command in sp flash tools
Smartphone Lenovo A820
- Thread starter cron0s879D
- Start date
Hey, or Salut 
I really hope that I didn't cross that line.. and about NVRAM I just don't understand what you said .
We ca private if you can help.
Thanks!
I really hope that I didn't cross that line..
and about NVRAM I just don't understand what you said .We ca private if you can help.
Thanks!
Ok, then I might just invest in a new phone.I'm thinking of Xperia SP right now
It's too bad, I really thought as well that these phones are unbrickable.. note the fact that I woke up with it frozen, and it hasn't been bricked by some recent ROM update or something.
Cheers!
Your choice, I'd stick with this model, wouldn't change it even with Samsung S3. Happy Woman's Day!
I'm thinking of Xperia SP right now
It's too bad, I really thought as well that these phones are unbrickable.. note the fact that I woke up with it frozen, and it hasn't been bricked by some recent ROM update or something.
Cheers!
Yeah, surrounded by 3 of them righ now. Happy Woman's Day to you too
Have no choice, if it's bricked, a motherboard will cost too much, and will probably have to order it from china again. No Thanks.
I have a Firefox OS ZTE right now that kinda sucks, but will do the job for now.
Have no choice, if it's bricked, a motherboard will cost too much, and will probably have to order it from china again. No Thanks.
I have a Firefox OS ZTE right now that kinda sucks, but will do the job for now.
Like I wrote in the email:
Have you tried with S139 official firmware and latest FlashTool?
I had similar problem with one iOcean X7 and almost gave up thinking the nand flash is dead, when I tried the latest FlashTool.
It seems some recent phones have different hardware inside and older FT can't recognize it.
Maybe even try to delete all drivers for the phone, then install again, but connect the phone to different usb port.
Also make sure that you don't have any other storage device plugged in, like usb flash drive or external hdd.
You can also try it on a different PC or OS.
One of the bricked A820 I've reflashed didn't work without battery when flashing, while mine, which is from the earliest batches with normal 6589 (not M), works without battery every time.
For newer phones you'd want S139 kernel or newer, because they ship now with different LCD and/or touchscreen which don't work with older kernels.
Of course there's always a possibility of hardware failure, like dead nand flash. Mine is Samsung and is slightly faster, newer batches use Hynix I think.
Have you tried with S139 official firmware and latest FlashTool?
I had similar problem with one iOcean X7 and almost gave up thinking the nand flash is dead, when I tried the latest FlashTool.
It seems some recent phones have different hardware inside and older FT can't recognize it.
Maybe even try to delete all drivers for the phone, then install again, but connect the phone to different usb port.
Also make sure that you don't have any other storage device plugged in, like usb flash drive or external hdd.
You can also try it on a different PC or OS.
One of the bricked A820 I've reflashed didn't work without battery when flashing, while mine, which is from the earliest batches with normal 6589 (not M), works without battery every time.
For newer phones you'd want S139 kernel or newer, because they ship now with different LCD and/or touchscreen which don't work with older kernels.
Of course there's always a possibility of hardware failure, like dead nand flash. Mine is Samsung and is slightly faster, newer batches use Hynix I think.
Last edited:
Finally something worked. Thank you Infrared!
I downloaded SP_Flash_Tool_v5.1352.01 from the link you provided and s139 frimware, loaded the scatter file from target_bin_md5, and suddenly after plugging it in, it was recognized as Mtk Preloader VCOM port and the flash completed successfully in a few minutes.
Now it is revived, and charging, but i'm getting an error when it starts : Tool dl image fail , uboot is blocking bij dl info.
As we speak i'm flashing again but with Flashtool_v3.1304.0.119-A820-OK as some people said it worked here: http://lenovo-forums.ru/topic/2382-bootloop-lenovo-s820-tool-dl-image-fail/
Will post back when I manage to get it working like before.
Thank you for now!
I downloaded SP_Flash_Tool_v5.1352.01 from the link you provided and s139 frimware, loaded the scatter file from target_bin_md5, and suddenly after plugging it in, it was recognized as Mtk Preloader VCOM port and the flash completed successfully in a few minutes.
Now it is revived, and charging, but i'm getting an error when it starts : Tool dl image fail , uboot is blocking bij dl info.
As we speak i'm flashing again but with Flashtool_v3.1304.0.119-A820-OK as some people said it worked here: http://lenovo-forums.ru/topic/2382-bootloop-lenovo-s820-tool-dl-image-fail/
Will post back when I manage to get it working like before.
Thank you for now!
You obviously didn't check the DL All with checksum. Load the scatter file, thick the checkbox and flash again the same way, it will work.
It worked, now I only need to install your rom
Big Big Thanks, will e-mail you about a small donation soon!
Big Big Thanks, will e-mail you about a small donation soon!
No need for donation, save your money for something better, or just drink a beer
The problem is the preloader, I think or maybe just a combination between preloader and FlashTools.
I had one A820 that also required preloader from S139.
The problem is the preloader, I think or maybe just a combination between preloader and FlashTools.
I had one A820 that also required preloader from S139.
It would be my pleasure, let me know if you change your mind then..
Drinking a beer right now
Cheers and many thanks again!
Drinking a beer right now
Cheers and many thanks again!
geez so many problems in few days, first i installed smart launcher, and went deleting all unused apps, so i deleted ideafriend , couldnt make calls nor sms, so i flash it , and everything came normal, except for: Ivaild IMEA
NEVER DELETE IDEAFRIEND APP!
Hey I also deleted ideafriend and also my launcher and now it's stuck on bootloop. What did you flash it with? What are my options? I did not install a custom recovery and only and Android recovery.
I think you need to flash your phone with SP Flash Tools, as described in this thread, but I think that voids your warranty, too
Hi
Ive got A820 which was purchased from merrimobiles a while back, it came pre rooted with some of the Chinese apps removed (some not all).
It currently has A820_S138_130419 , what is the best way to get a new rom and what roms are recommended, I have mobileuncle and super user installed installed.
When I boot into recovery it is I Chinese.
Any links to guide would be appreciated
.
Edit:
Worked it out:
Installed a newer (english version) of CWM via mobileuncle tools
Backed up current ROM
Downloaded infareds A820 4.2.1
Used CWM to install new rom and gapps.
Ive got A820 which was purchased from merrimobiles a while back, it came pre rooted with some of the Chinese apps removed (some not all).
It currently has A820_S138_130419 , what is the best way to get a new rom and what roms are recommended, I have mobileuncle and super user installed installed.
When I boot into recovery it is I Chinese.
Any links to guide would be appreciated
.
Edit:
Worked it out:
Installed a newer (english version) of CWM via mobileuncle tools
Backed up current ROM
Downloaded infareds A820 4.2.1
Used CWM to install new rom and gapps.
Last edited:
A820T is different of a820,there system is different,you must find the rom for a820t ,than it can work.
A820
Hello everybody,
please help, I think I bricked my Lenovo A820. I tryed to flash new ROM with SP Flash tool v3.1252.1, but accidentally I didn't uncheck preloader.
After flash I can not power up phone or flash another preloader although COM port is visible in device manager (widows 7).
thank you in advance
Hello everybody,
please help, I think I bricked my Lenovo A820. I tryed to flash new ROM with SP Flash tool v3.1252.1, but accidentally I didn't uncheck preloader.
After flash I can not power up phone or flash another preloader although COM port is visible in device manager (widows 7).
thank you in advance
See here under point 2 for a preloader that work and the use of meta-mode to unbrick
http://mightyintelligence.blogspot.co.uk/2013/07/lenovo-a820.html
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5Lenovo A820
So I solved the issue and got everything I actually wanted.
So after some flashes and reformats (of the same rom as I didnt have other) I finaly checked the DA DL All with Check Sum in the upper right corner and reflashed again. Then the phone started ok with the custom rom however with some issues, 1.Invalid IMEI , 2.Play store not actually working , 3. Even more preinstalled chinese apps.
However my concern at this point was the imei. I dont know if the imei was lost after the first reflash or because I formated the flash, all of it in Flash Tools. What I mean is I dont know if youll experience this too, but you should backup your imei(there is some info on the net about a file you should backup, didnt look much into it as it was too late for me) before flashing > I read that some people lost the imei even after factory resetting their lenovo phone (wasnt my case, I actually resetted it bunch of times ahter I fixed the imei).
Because I didnt like the rom, kept looking and finally found the official lenovo one on a russian site (used google translate). I flashed this rom with Flash tools and the phone was back to factory state - IMEI.
Rewriting the IMEI was kind of a pain (not because was finally hard, but because I found the info hard). Its a dual sim phone so it has 2 imei, one of them was below the battery written and the other one dont know. So I wrote the same imei for both (doesnt bother me as I wont use the dual sim function, just the on).
At this point the phone was exactly how I received it , so far I only repaired the damaged I made.
Then I went back in Flash tools and this time I only flashed the recovery and boot image (from the recovery-a820 archive found on needrom site and with the instructions there) - BTW: First time I didnt do this because the custom rom I found there was flashable with flash tools and it contained recovery allready. But now I decided not to install the custom rom anymore, so I just flashed the recovery mode.
Started the phone and discovered Root Explorer and superuser (both in chinese, but figured them out).
Then I reboted in recovery mode because I was curious what the is , also was in chinese.
My next goal was to get google play working. So downloaded google play apk, google services framework apk and google login services apk from different sources and placed them on the sd card. The point was to move those 3 apk files to system/app but since root explorer was in chinese I douwnloaded some other file manager that could access root also, moved the files to system/app and restarted the phone but nothing happened. Checked again to see if the files were still in the system/app folder, they were, but the permission was 600(I belive thats corect , superuser had read/write and the others nothing). So I downloaded a bunch of other file manager so I can change those file permissions but none of the ones I downloaded worked(I mean to change permissions). Eventually I downloaded link2sd , uninstalled the chinese root explorer and with this oportunity all the other chinese built in apps I had no interest in (not the lenovo ones, the woo ones and the ones that didnt even had title in english). Then I installed root explorer in english , and managed to change the permissions on those files to 644 then restarted my phone.
Google play store installed at boot and appeared in the menu (so did the root explorer in chinese, I belive I shouldve replace its apk in the superboot folder, but whatever, dont need it anymore). Runned Play store but it didnt actually start (Kept on saying Google play has stopped working), so I went in settings > apps to clear the cache for the play store app and noticed there the play store size was 00 everywhere so I guess the installation wasnt so successfull. However I then went to the play store apk from sd card and installed it again (normally like any apk), warned me it is going to replaced a system app , I agreed and it installed successfully. Now Play store runs perfectly , downloaded a bunch of apps for testing and really runs perfectly.
So as it turns out to root the phone and install Play store isnt as hard as I made it be. Good luck to you and I hope this info will help you.5Non-Lenovo rom for A820
If anybody is interested, I made a non-Lenovo based rom for this phone.
It can be installed through CWM.
Thanks - again - for bgcngm http://forum.xda-developers.com/showthread.php?t=2246874 for the base of the rom.
The rom is available here
Please note that this update really change your phone's appearance.
This is rooted, and does not contain Chinese suspicious softwares.
It is simple as possible, so if you want to use googleapps, then you shall install it from CWM.5A820 JB 4.2.1 port from ZTE V987.
Many thanks to bruno, it's based on his B01 ROM!
The ROM is permanently rooted, multilanguage and has the stock Android look and feel.
Gapps not included, but you can install through CWM/TWRP, this package works fine: http://goo.im/devs/UniqueDroid/gapps/gapps-4.2.1/gapps-jb-4.2.1-20121129-signed.zip
Keep in mind this is in alpha stage, although everything seems to work. I've verified it doesn't mess up the touchscreen, so it is safe to flash.3If you look some post up you will see some links you can use.
@TheTen: If you have root you can remove the start and shutdown movie and sound (4 files). It will boot an shutdown with the stock Android animated text logo.
