Database Develop

Huawei P7 L10: Update and Reset: Cust fail

I updated from B136 to B839 via Local Update.
At 99% the Update aborted and the P7 said: update fail, cust fail
I tried a reset and here is the same: cust fail.
The B839 is working so far, but there are some bugs only I have.
I tried to downgrade to 4.4 via local update with the transitionpackage from Huawei, but the same:
Update fail.
Could anybody help me, please?

Follow this guide:
https://rejzor.wordpress.com/2015/12/03/update-huawei-ascend-p7-l10-to-android511/
I had tons of problems because I also updated from B135 directly to B830. But downgrading back, installing the CUST fix and upgrading up again fixed it. Hope it helps.

Is there no way to easily flash the fitting CUST-Version for B852?

pokko said:
Is there no way to easily flash the fitting CUST-Version for B852?
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Click to collapse
Unfortunately no, I don't think there is. B621 is the only I've ever seen.

I updated from B136 directly to B839 (Full) via Local Update and then to B852 (70MB-file) also Local Update.
So I have to downgrade to B830 first, then to B621?
CUST-Hotfix not needed?
After that I can upgrade to B839 with the Full-Version (local Update) without first upgrading to B830 and then to B852 with the update-file?
Do I have to handle it with Local Updates or are force Updates also possible?

Yeah, downgrade back to B621 (I had to go back in exact steps I used to go forward, meaning B839->B830->B621), install B621 CUST fix, install B830 and then you can either use full B839 to be sure like I did or you can go B830 -> B839 OTA -> B852 OTA (currently B852 only comes in OTA version).
Sometimes, if downgrading step fails, just keep repeating it. Eventually it will work. Not sure why this happens, but it does.

Ok, so my plan looks like this:
Unrooting my device by flashing Stock Recovery Emui3.1 via ADB
Factory Reset
Downgrading directly to B621 via Force Update
Factory Reset
Installing B621 CUST-Fix
Factory Reset
Update to B839 with Full B839 via Force Update
Factory Reset
Waiting for OTA B852, installing it OTA,
or
Local Update B852 (60MB)
Factory Reset
Flashing TWRP 2.8.7.0.img via ADB
Rooting with SU
Does this looks ok?

Something is going wrong.
Downgrade fails.
Both, Force Update and Local Update installation to B839 fails.
My device was rooted and the TWRP recovery was installed.
So I installed Stock Recovery EMUI3.1 in order to do the downgrade.
But there is no chance to get the downgrade to B839 work.
I also tried to downgrade to B830 but there is the same problem.
I tried several times.
What is wrong?

Update B832 --> B852 HELP

How can i update my actually rom B832 to B852 ?

You can go straight to B839, then OTA to B852, just backup your stuff.

tommykole96 said:
You can go straight to B839, then OTA to B852, just backup your stuff.
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Click to collapse
how to do to get back to B839 ? And what is OTA, i dont know what is it. I would be grateful for an explanation

On what rom are you now, b832? OTA ( Over The Air) is an update that comes wirelessly, it's not full firmware.

tommykole96 said:
On what rom are you now, b832? OTA ( Over The Air) is an update that comes wirelessly, it's not full firmware.
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Click to collapse
yes now b832 and he doesn't work well , video on Facebook crashed and youtube, and i think that camera doing bad photos (noise)

Update direct to B839, here's link: http://www.carbontesla.com/2015/11/download-ascend-p7-full-b839-lollipop-firmware/
Just make sure that you have P7-L10 variant.
And after upgrading to B839, flash This OTA: http://www.carbontesla.com/2015/12/download-huawei-ascend-p7-b852-lollipop-ota-zip/

Huawei ascend p7 L-10 B853 local update

Hi all,
I updated my P7 with the B853 firmware. I want to downgrade but I'm not abble to reload any old firmware.
In the option I don't have the possibility to do a local update. When I reboot the phone with +- and power any update can be installed.
Can you help me to downgrade my phone ?
Thank you very much.
Hammer

When you install b853, you are losing updater app, you will need to download transition package and do a force update, put it on sd card in dload folder, turn off the phone and hold Vol up Vold down and power button for a 10 seconds, after you installed transition package, flash kitkat firmware that you had before lollipop.

I tried to force the install for B126 or B621 in kitkat but without any success. what kind of "transition package" do I need to install ?
Thanks,
Hammer

hammer1810 said:
I tried to force the install for B126 or B621 in kitkat but without any success. what kind of "transition package" do I need to install ?
Thanks,
Hammer
Click to expand...
Click to collapse
Have a look here: http://forum.xda-developers.com/showthread.php?t=3245504. After that you should be able to flash B621.

my cust is CUSTC408D001
its north africa cust
and i upgraded to lollipop b832 new zealand version
my question is can i upgrade now straight to lollipop b853 north africa ?
thanks in advance

Update from B135 to B380 directly, is it ok?

Hello there, I'm trying to update my EVA-L09C605B135 to B380 (nougat) manually and I want to know if it is safe to do it. In Fimrware Finder I found aviable only B320, B360 and B380 and previous only B135 (the one and latest I'm currently using) for my CUST. Should I start by updating to a previous version or is it ok to go on with latest?
Edit: in FF B320 and B380 appear like "OTA" while B360 is the only that appears as "FULL", what does that mean? Should I go for FULL?

I have a Vodafone UK branded handset and went from B137 (MM) to B341 (Nougat) without any issues.
I had TWRP installed and flashed the update zips there, when i went to Nougat and temp lost TWRP, using the dload folder method worked too.
tl;dr - yes to your first question! IMHO.
I would say that ota updates are incremental updates, and if coming from one android version to another ie Marshmallow to Nougat you want to flash the "full" update zip. That's what i would do anyway...
Peace

Am also in need of that answer.

Need Passed HW Update Verification After Debranding C432

Hi Guys
First Sorry For My Bad English
I debranded to l09-c432 and Install b136 Easy But When I want Install lastest Fw Like b394 or b386 i got error in 3button updating Method
I Need the Lastest FW for l09-c432 to i installable and pass Huawei Verification
For Sometime I want to install custom Frimware and go back emui i cant install lastest one whitout any error

reynard1 said:
Hi Guys
First Sorry For My Bad English
I debranded to l09-c432 and Install b136 Easy But When I want Install lastest Fw Like b394 or b386 i got error in 3button updating Method
I Need the Lastest FW for l09-c432 to i installable and pass Huawei Verification
For Sometime I want to install custom Frimware and go back emui i cant install lastest one whitout any error
Click to expand...
Click to collapse
Install b182 (still MM) and you should then receive OTA upgrades to b38x, b39x (Nougat)

zgfg said:
Install b182 (still MM) and you should then receive OTA upgrades to b38x, b39x (Nougat)
Click to expand...
Click to collapse
I Know That,But Ineed Full Flashable fw idont want OTA I need Flashable b38x frimware

Any help?
Sent from my EVA-L09 using Tapatalk

reynard1 said:
Any help?
Sent from my EVA-L09 using Tapatalk
Click to expand...
Click to collapse
I still don't understand why you don't 'like' OTAs. In System Update, Settings, you can always choose Full Update instead of default Differential. And you can force afterwards Factory Reset if you think you need.
b386 is the last flashable by DLOAD. Btw, I was going back and forth through diff stock and rooted and custom ROMs, rollbacks, OTAs, and never had any error in installations. There are many threads with excellent info and guides, you must read and follow because in diff situations methods might be different. DLOAD is not always applicable