Updating and Flashing a EM7455 under Ubuntu Linux 18.04 LiveCD

Bash script to automate the entire process of setting up any of the EM/MC74XX series modems (Generic, Dell, Lenovo). This assumes you have the Sierra card inserted into a USB enclosure.
Blog Series on the EM7455: www.ttl.one/2018/07/sierra-wi...
GitHub repository: github.com/danielewood/sierra...
From the script description:
- Only for use on Ubuntu 18.04 LTS LiveUSB
- All Needed Packages will Auto-Install
- Sets MBIM Mode with AT Commands Access
- Changes all models of EM74XX/MC74XX Modems to the Generic Sierra Wireless VID/PID
- Clears Band Restrictions and Places Modem in LTE only mode.
- Flashes the Current Generic Firmware as of 2018-07-18

[@kylemcpherson5043]

Daniel - Fantastic tool. I appreciate your work. Works great as of 11-5-19.

[@user-iw2tt2md2h]

Спасибо огромное дружище, ты не представляешь скольким людям ты помог!

[@jcs1492]

Thanks for posting, It worked like a charm ( with the right usb adapter ). I used a wwan card to usb with SIM slot from Amazon. Other devices failed to be recognized in Ubuntu. Thanks again, my Mi-Fi 4g router is ready.

[@williamblake3275]

Great script! I just received my $19.99 Dell branded EM7455 from ebay and tested this and it worked great. Thank you!

[@TianJunLiu]

Thanks a lot ,this video is very helpful ,my leveno em7455 can work on my maxtang NUC now!!!

[@user-bt6fy9dv5t]

Присоединяюсь к благодарностям!!! работает 100%

[@Mark_Mikhail]

Can I use an m.2 SSD to usb enclosure instead of the wwan slot in my X270 to perform the upgrade? Or I need a special wwan to usb adapter?

[@adriangiel431]

Hello Daniel Wood You can update the link in the script to FW sierra, it crashes when you try to download Thanks and regards

[@asdfgh-ib5qu]

Hi daniel.im stuck with my sierra crd flashing. Can you help me? Where can i reach you?

[@kylemcpherson5043]

Any plans for a EM7565/7511 version?

[@Vitaliuz]

The script doesn't work _(at least as of now)_ on a DW5811E. First of all, it requires Ubuntu 20.04+, not 18.04 _("Please run on Ubuntu 20.04 (Focal Fossa) or later")._ I've booted up a live Ubuntu _(tried on both 20.04 and 22.04),_ ran the script, it successfully got to the "firmware update operation finished successfully" part _(I still have the logs from that terminal),_ hence, stating that it converted the module to a generic one. But the modem booted up as a DW5811E _(same way it was before wasting time on this script)_ in Win10, even though all the Dell drivers _(all EM7455-related ones, to be exact, including generic and Sierra)_ were removed from Win10 beforehand, including uninstalling the hidden devices themselves and all EM7455-related apps, and disabling the internet connection, ofc - to prevent it choosing a Dell FW during the "new" initialization phase. There were no ports available as well _(just like before)_ - even after installing Sierra and generic drivers afterwards _(so it would trigger one of four FW's on a module, if a script properly converted it to generic)._ I already fixed it, ofc, under *Win10,* using a manual method _(even though there were no ports available to begin with),_ which took me even less time than messing with the script, re-downloading and flashing the later builds of Ubuntu. Now I have a working _(it was working before, ofc - just w/o ports, hence, no CA settings available besides auto, and no monitoring, ofc)_ EM7455 flashed to the latest generic FW, not thanks to this script - but thanks to fellas who did a *Windows* guide instead.

Where there is windows tutorial? I need one for mine dell's dw5811e, it is has old fw and blocked com ports..

[@Vitaliuz]

@ I did it manually, collecting the info from bits and pieces around the internet _(I mean, I haven't used a tutorial per se)._ =) However, later on I used some other guide, and it worked perfectly as well _(under Win10 LTSC 21H2)_ on an another Dell locked module _(it wasn't in LPM, so can't confirm on that one)._ Successfully unlocked it _(flashed to generic),_ and modded the CA to support the frequencies I need _(which give the highest bandwidth at my location)._ The name is - *"[ГАЙД] Sierra EM7455: прошивка, смена IMEI, перевод в QMI, частоты, агрегация, USSD, APN"* _(messages with links will most likely be deleted, so just paste it in the YT search bar)._ It's pretty basic - everything is done using .bat's _(but you can do the same manually using the terminal as well, ofc - commands are also provided)._ Just follow the instructions carefully - it's pretty simple. And don't forget to use the bands for *your location* _(edit the .bat, or change them if you'll use the terminal)_ - as the bands/frequencies provided in that vid are for *russian* cell networks. If you're from Europe - they might be the same _(google the cell network bands at your area)._ And if not - not a problem, as merely a single .bat run will change them to your ones - you won't have to do something "heavy" like flashing the module again. =)

[@Mutalib0088]

почему то скрипт мне не помогло, несколько раз пробовал на разных устройствах запускать скрипт, на виртуальной машине тоже самое, в итоге на винде прошил в общий, но не подключается в интернет, не понимаю в чем проблема

[@krisdphillips]

Hello Daniel, FYI, your script is broken. Someone made a modded version of your script in the LTE Hacks forum fixing the path, but Sierra Wireless removed the /zip/ URL path and it redirects to a 404 now. Hard-linking the script to the current ZIP file works for now, but it would be nice to have the auto detection working again, if possible. Thank you so much for this! Its been really helpful flashing my Dell EM7455 chips to generic for use with OpenWRT.

[@adriangiel431]

Hi, can you send us where to find the corrected script with improved Sierra URL?

[@adriangiel431]

@@krisdphillips thank you very much, I'll check tomorrow but I can already see how it is changed in the script

[@krisdphillips]

@@adriangiel431 Yeah, its not a very "elegant" change, but it gets the job done until the official script gets repaired properly.

[@adriangiel431]

@@krisdphillips Everything was successful, the modem detects it correctly. Thank you mate, I owe you at least a beer :)

[@joeclough6430]

@@krisdphillips Hello, by chance do you have the link still on how we are able to update the firmware with either a new URL or an example on how we car hard-link the current zip? Been trying to flash my em7455 with no luck. Thank you

[@neilhernandez1526]

Does it work as well on EM7430?

[@user-tf9ll9um6s]

em7455 запуск этого устройства невозможен код 10, можно как то во становить

[@jarrodbedelen]

Can you make one for the EM7565?

[@danielwood6556]

I have a EM7565 that is stuck in bootloader on the way to me now, so we'll see.

[@gsmantenna]

@@danielwood6556 I have EM7511 only MBIM (plug from Laptop), not at port , any advise to switch to MBIM +AT or QMT+AT?

[@AntonioBova]

Doest it work also from laptop's m.2 port?

manually flashing works for sure, script didnt want to work

[@EliProtiva]

what speed do you get?

[@danielwood6556]

Its right on the first page of my GitHub.