[GUIDE] [Huawei Ascend G300] Unlock bootloader and gain root access.

Bad english .. I'm sorry I could not tell my problem..

There was no radio, but the original firmware of my device's firmware ..

Phone brands and are characteristic of the.

Model Number: U8816 - Huawei Ascend G301
Android Version: 2.3.6
Baseband Version: 109808
Kernel Version :2.6.38.6-perf android @ localhost #
Build Number: U8816V100R001C416B895

I would like to help..

Originally had a radio version of the device, but the KVK 2.3.6 Gingerbread ROM to Turkey where required by law bandrol state tax is not installed on the phone radio software for radio devices, so it is not installed on the radio to cut down the cost ..

G300 and G301 devices have the same features .. but how do I want to install the software for my device and upload the original radio, I do not know .. I would be glad if you help me I need radio with RDS apk device as the original ..

I'm sorry again ..

krishneelg3 said:

I am having trouble understanding you mate, but don't worry I don't blame you, English may not be your first language. So here's what I want you to do.

Explain what you want to happen. Preferably in key words? Like this.

Install apk of radio

Or

Info on installing ROM

Something like that? If not then just write it up in your language and I'll translate it.

Cake...

Click to expand...

Click to collapse

Huawei Ascend G301 original radio.apk required..

krishneelg3 said:

If its a stock ICS then this will work.

Cake...

Click to expand...

Click to collapse

Dude its on Huawei's site and I think that means it is stock rom.
here is the link of Huawei's website of this rom:
http://consumer.huawei.com/en/support/downloads/detail/index.htm?id=13968

krishneelg3 said:

Yeah then its rootable this method doesn't work on gingerbread. Only on Ice Cream Sandwich

Cake...

Click to expand...

Click to collapse

thanks a lot for your advice
rooted successfully

I guess nobody gives a f*** on xda about g300...

Bricked G300 - advice on repair?

I bought an Ascend G300+ (U8815-71) from Australia, although I live in the UK (long story). It was running Gingerbread and had the 109808 baseband. I followed the instructions at huaweig300.com to root and unlock the phone and then to upgrade it to stock ICS and 2030 baseband; it all went smoothly, and the phone was running fine. I wish I'd stopped at that point!

I then tried to unlock the bootloader so that I could install CWM. I didn't realise then that I could have got a bootloader unlock code from Huawei (or DC Unlocker). I continued with the huaweig300.com instructions (http://huaweig300.com/huawei-g300-i...ock-bootloader-install-clockworkmod-recovery/). When I ran BootloaderG300.exe one of the operations failed, and then when I rebooted the phone it was bricked. All it will do is to flash the buttons 10 times when I press the power button or plug the charger in. It won't boot into recovery mode or bootloader mode, and it can't be accessed via USB.

I've found a post on MoDaCo from someone who had exactly the same experience (http://www.modaco.com/topic/363175-g300-unlock-bootloader-brick/). That makes me think the G300+ may need its own bootloader image; fortunately I have a nandroid backup.

I'm fairly sure it needs a JTAG repair to reflash the bootloader, and I've tried several local shops, but it seems that Huawei phones are harder to fix than commoner makes. I know this is a long shot, but if anyone in the UK has had a similar experience and can offer any advice on who to go to, I'd be very grateful. I'd prefer to take my phone to somewhere in the Leeds/Bradford area, but would be prepared to use a postal service if necessary.

pcgardner said:

I bought an Ascend G300+ (U8815-71) from Australia, although I live in the UK (long story). It was running Gingerbread and had the 109808 baseband. I followed the instructions at huaweig300.com to root and unlock the phone and then to upgrade it to stock ICS and 2030 baseband; it all went smoothly, and the phone was running fine. I wish I'd stopped at that point!

I then tried to unlock the bootloader so that I could install CWM. I didn't realise then that I could have got a bootloader unlock code from Huawei (or DC Unlocker). I continued with the huaweig300.com instructions (http://huaweig300.com/huawei-g300-i...ock-bootloader-install-clockworkmod-recovery/). When I ran BootloaderG300.exe one of the operations failed, and then when I rebooted the phone it was bricked. All it will do is to flash the buttons 10 times when I press the power button or plug the charger in. It won't boot into recovery mode or bootloader mode, and it can't be accessed via USB.

I've found a post on MoDaCo from someone who had exactly the same experience (http://www.modaco.com/topic/363175-g300-unlock-bootloader-brick/). That makes me think the G300+ may need its own bootloader image; fortunately I have a nandroid backup.

I'm fairly sure it needs a JTAG repair to reflash the bootloader, and I've tried several local shops, but it seems that Huawei phones are harder to fix than commoner makes. I know this is a long shot, but if anyone in the UK has had a similar experience and can offer any advice on who to go to, I'd be very grateful. I'd prefer to take my phone to somewhere in the Leeds/Bradford area, but would be prepared to use a postal service if necessary.

Click to expand...

Click to collapse

Same thing happened to me after following the moddaco guides. (same link quoted above)
It seems like the bootloader version for G300+(aka U8815-71) is different to the original G300.

Since I'm based in Australia I managed to Swap it from the retail outlet.

To the new phone I rooted from GB version. (Hence bootloader unlock is not applicable in first place).

I found some JTAG kits online
, then again they are for U8815-51 version.

pcgardner said:

I bought an Ascend G300+ (U8815-71) from Australia, although I live in the UK (long story). It was running Gingerbread and had the 109808 baseband. I followed the instructions at huaweig300.com to root and unlock the phone and then to upgrade it to stock ICS and 2030 baseband; .

Click to expand...

Click to collapse

Which Upgrade FIle did you use. Is it B952 ICS Update or the official VHA


I tried the offcial VHA and had the same issue while rinning the boolderG300.exe

rsd3k said:

Which Upgrade FIle did you use. Is it B952 ICS Update or the official VHA


I tried the offcial VHA and had the same issue while rinning the boolderG300.exe

Click to expand...

Click to collapse

I used the ICS B952 update. Although that worked fine, I had wondered if using B952 instead of the VHA update caused BootloaderG300 to fail, but from what you say that's not the case.

I'm glad you managed to swap your phone. I've taken mine to several repair shops but so far no success. I'm on the point of giving up and throwing it away (or giving it to my wife to cannibalise for parts - she makes steampunk jewellery ) I've considered buying a JTAG box plus jig, but it's quite expensive and I'd have to learn from scratch - even if I became competent and offered a repair service, it would be a while before I recouped the cost.

Huawei G300 Problem...

Hi, I have a problem, I was on 109808 baseband and trying to change it to 2030 following the guides, but I accidently unlocked bootloader on GB (now I know that I shouldn't have done that), and my phone just keeps rebooting when I turn it on (I can't acess recovery). But I can force update by holding Volume + & Volume - while turning it on, so I was wondering is there any fix to this? And which ROM should I force update to recover it? (Btw, I tried several official firmware-s but I just get pink line without any text, and it stops at about 1/3 and just stays there) Thanks in advance.

pcgardner said:

When I ran BootloaderG300.exe one of the operations failed, and then when I rebooted the phone it was bricked. All it will do is to flash the buttons 10 times when I press the power button or plug the charger in. It won't boot into recovery mode or bootloader mode, and it can't be accessed via USB.

Click to expand...

Click to collapse

I did exactly the same as you. Did you ever find a solution to your brick problem? I've bought another G300+ since and unlocked the bootloader successfully using the latest version of DC-Unlocker and have got ICS running on it. I've managed to back up the ICS rom and have it saved on my computer.

Is there any way to repair the bootloader on the bricked phone besides using JTAG? I got quoted $60AU + postage to repair it, but since I only paid $79 for it in the first place, I dont want to spend the same or more to repair it. Any suggestions from you Android gurus? Any help much appreciated.

EDIT: Here's a partion layout of the phone.

Android version: REL 4.0.3
onandroid script version: 9.2
Device: hwu8815 Huawei HUAWEI HUAWEI U8815
Contents of: /proc/partitions
major minor #blocks name

179 0 3817472 mmcblk0
179 1 20 mmcblk0p1
179 2 300 mmcblk0p2
179 3 133120 mmcblk0p3
179 4 1 mmcblk0p4
179 5 12288 mmcblk0p5
179 6 196608 mmcblk0p6
179 7 4096 mmcblk0p7
179 8 3072 mmcblk0p8
179 9 4096 mmcblk0p9
179 10 3072 mmcblk0p10
179 11 3072 mmcblk0p11
179 12 393216 mmcblk0p12
179 13 786432 mmcblk0p13
179 14 4096 mmcblk0p14
179 15 8192 mmcblk0p15
179 16 20480 mmcblk0p16
179 17 4096 mmcblk0p17
179 18 81920 mmcblk0p18
179 19 2154496 mmcblk0p19
179 64 1024 mmcblk0boot1
179 32 1024 mmcblk0boot0
31 0 4096 mtdblock0
179 96 7822336 mmcblk1
179 97 7818240 mmcblk1p1

EDIT2: I've managed also to get the mmcblk0boot0 and mmcblk0boot1 from my new phone onto my computer. I don't know if this is of any help.

It's a G300+ which has 850, 900 and 2100 3G bands. The G300 only has 850 and 2100 3G. Hardware is virtually identical other then that. I used the instructions on Modaco site to try and unlock the bootloader (had upgraded to ICS which locks bootloader). All the phone does now when you plug USB charge cable in is flash the button lights ten times. There is no other response from phone at all. So it seems that the bootloader unlock exe is only for the G300 and not the G300+.

I've bought an identical phone and managed to unlock the bootloader OK on that using DC-Unlocker (this is free to use to unlock bootloader). I have a nandroid rom backup from it and also the 2 boot partitions.

The bricked phone does not respond to the usual recovery/download mode power/volume button presses. Is JTAG my only option or is there another way to recover it?

Thanks

No, the only thing that happens when I turn it on is that the button lights flah exactly 10 times.