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Huawei E5770 custom firmware & O2 SIM unlock

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By ValdikSS, Senior Member on 16th March 2019, 10:46 AM
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11th June 2019, 07:42 PM |#11  
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unfortunatly balong_flash doesn't seem to work on windows 10
18th July 2019, 02:07 PM |#12  
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Quote:
Originally Posted by zebignasty

unfortunatly balong_flash doesn't seem to work on windows 10

worked fine for me on Windows 10 Pro
7th August 2019, 06:19 PM |#13  
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Version 2.3.1. Based on firmware 21.329.01.00.00 and webui 17.100.19.01.00
Changes since v2.3:
Firmware:
* Fix passwd_def telnet default password file
* Fix OpenVPN NAT scripts: properly remove added FORWARDING and INPUT DROP rules, clarify README
* Clarify net.{down,up} scripts
11th August 2019, 03:39 PM |#14  
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There are more than one variant of E5770.
Will this firmware work on E5770S-923 model?
12th August 2019, 07:32 AM |#15  
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Quote:
Originally Posted by BarakOsama

There are more than one variant of E5770.
Will this firmware work on E5770S-923 model?

Yes it will.
18th September 2019, 10:50 PM |#16  
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Hi OP,
my device is stuck on download mode.
can you please explain the flashing steps for the custom firmware.
As per your Read-Me the firmware should be flashed by balong_flash FLASH_FILE.BIN command.
Whats unclear to me is which file is to be flashed first. There are 2 .bin files in the custom firmware archive.
It will be a great help if you can give a step-by-step guide.
19th September 2019, 03:17 AM |#17  
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Quote:
Originally Posted by BarakOsama

Hi OP,
my device is stuck on download mode.

First of all, to install custom firmware you need to install technological firmware somehow. You can't install it just by flashing, it will require flash code which cannot be obtained easily. To bypass flash code check, I made downgrading firmwares for several firmware versions. You need to install downgrading firmware for your current firmware version, which will downgrade to technological firmware, and from technological firmware you can install any firmware, including custom one.
What exact steps did you perform, what exact result did you get?
20th September 2019, 11:41 AM |#18  
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Quote:
Originally Posted by ValdikSS

First of all, to install custom firmware you need to install technological firmware somehow. You can't install it just by flashing, it will require flash code which cannot be obtained easily. To bypass flash code check, I made downgrading firmwares for several firmware versions. You need to install downgrading firmware for your current firmware version, which will downgrade to technological firmware, and from technological firmware you can install any firmware, including custom one.
What exact steps did you perform, what exact result did you get?

After two days of googling I found the original firmware I had on the device and now the device is working again
Can you provide me a downgrading firmware to E5770s-923 21.316.03.00.1133 firmware version?.
E5770s_UPDATE_21.316.03.00.1133_WEBUI_17.100.13.02 .1133_MRE5.zip
20th September 2019, 06:24 PM |#19  
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I flashed the custom firmware.
But somehow I cannot access the extended menu.

Software version: 21.329.01.00.00
Web UI version: 17.100.19.01.00
24th September 2019, 05:45 AM |#20  
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Quote:
Originally Posted by BarakOsama

I flashed the custom firmware.
But somehow I cannot access the extended menu.

Software version: 21.329.01.00.00
Web UI version: 17.100.19.01.00

You need to press left button 7 times on the wi-fi information screen.
GuestD0956
24th September 2019, 06:39 PM |#21  
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I have a E5770s-320 with the following firmware:

Software version: 21.318.01.00.00
Web UI version: 17.100.14.01.00

Which downgrading firmware should I use to get a firmware without signature checks?
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