# EM7455 Flash **URL:** \ **Category:** MC/EM Series\ **Created:** [September 18, 2023, 12:49pm UTC](https://forum.sierrawireless.com/t/em7455-flash/30634 "2023-09-18T12:49:53Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Rma](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@Rma](https://forum.sierrawireless.com/u/Rma)\ **Post date:** [September 18, 2023, 12:49pm UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/1 "2023-09-18T12:49:54Z")
![LTE Modul EM7455](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/3/3c1e57e3db73f4d3e1838e318fc3103dd12ed466.jpeg) Hello Hello, i try to flash my new Batch of 100x EM7455 but it doesnt work. I tried every Single Version but no succes. Is there any way to flash the LTE Modul? And sorry im Really new to this, so please be patient with me. If you need some more information, just ask. For every help im very greatful Thank you ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [September 18, 2023, 1:08pm UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/2 "2023-09-18T13:08:23Z")
how about running the “AT!BOOTHOLD” first? It should then enumerate a DM port only in device manager, and then you can run again the exe or fdt tool to upgrade FW. ---
**Author:** ![Rma](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@Rma](https://forum.sierrawireless.com/u/Rma)\ **Post date:** [September 18, 2023, 1:23pm UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/3 "2023-09-18T13:23:34Z")
Hello, thank you. But can you explain it a little bit more? Because i dont now what do you mean. Thank you very much ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [September 18, 2023, 1:27pm UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/4 "2023-09-18T13:27:12Z")
Do you have modem port in device manager for communicating by AT command? ---
**Author:** ![Rma](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@Rma](https://forum.sierrawireless.com/u/Rma)\ **Post date:** [September 18, 2023, 1:28pm UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/5 "2023-09-18T13:28:40Z")
No i dont have it in the Device Manager. I thin i have to start from the very beginning. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [September 18, 2023, 1:33pm UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/6 "2023-09-18T13:33:27Z")
You can see here to get back the modem port: > [@USSD Software for Windows 10](https://forum.sierrawireless.com/t/ussd-software-for-windows-10/25041/36): > > you can open Configuration.ini and change “USBCOMP=8” and run the driver setup again ---
**Author:** ![Rma](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@Rma](https://forum.sierrawireless.com/u/Rma)\ **Post date:** [September 18, 2023, 1:38pm UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/7 "2023-09-18T13:38:13Z")
Okay thanks i will try that, and then i will give you an update. ---
**Author:** ![Rma](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@Rma](https://forum.sierrawireless.com/u/Rma)\ **Post date:** [September 19, 2023, 7:27am UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/8 "2023-09-19T07:27:14Z")
Hello, now this one show up in the Device Manager, but it seems not correct. Did i something wrong? I installed the Driver 5087 with the Configuration and tried both ways USB COMP 8 and 99 ![LTE Modul Driver](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/1/1b1d0b56ee26bf748591a4a8a08f67f1cd7e22ec.png) ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [September 19, 2023, 7:41am UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/9 "2023-09-19T07:41:32Z")
I saw there is modem port, but not sure why the driver is not installed properly. Have you tried another usb port? Have you tried another windows pc? ---
**Author:** ![Rma](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@Rma](https://forum.sierrawireless.com/u/Rma)\ **Post date:** [September 19, 2023, 8:08am UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/10 "2023-09-19T08:08:03Z")
yes thats strange, tried every USB Port, now i will try another PC. I will give you an update then Thanks for your help. ---
**Author:** ![Rma](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@Rma](https://forum.sierrawireless.com/u/Rma)\ **Post date:** [September 19, 2023, 8:22am UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/11 "2023-09-19T08:22:24Z")
sooo… still the same Problem, is it possible that my USB M2 adpater is not working correct? Or is there any other way to install it? I have more than 100 LTE 7455 Moduls, but still the same Problem. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [September 19, 2023, 8:24am UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/12 "2023-09-19T08:24:25Z")
did you see problem in linux PC? If yes, probably this is your adaptor problem ---
**Author:** ![Rma](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@Rma](https://forum.sierrawireless.com/u/Rma)\ **Post date:** [September 19, 2023, 8:26am UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/13 "2023-09-19T08:26:48Z")
Can you show me wich adapter should work? I dont have much experience with Linux. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [September 19, 2023, 8:27am UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/14 "2023-09-19T08:27:14Z")
i don’t use M2 adaptor, I use the EM7455 dev kit. can you double click the modem port and see why there is installation problem in device manager? ---
**Author:** ![Rma](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@Rma](https://forum.sierrawireless.com/u/Rma)\ **Post date:** [September 19, 2023, 8:34am UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/15 "2023-09-19T08:34:30Z")
Which Dev Kit do you use? In the Device Manager it says, This Device cannot start Code 10 The reqested operation was unsuccesful. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [September 19, 2023, 8:36am UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/16 "2023-09-19T08:36:25Z")
I used this development kit: > **[AirPrime - EM Series - USB3 - Development Kit Quick Start Guide](https://source.sierrawireless.com/resources/airprime/development_kits/airprime_em_series_usb3_development_kit_board_quick_start_guide/#sthash.SfsuVsou.dpbs)** > > This document describes how to set up the hardware for the Sierra Wireless EM USB3.0 Dev Kit for use with supported AirPrime LTE modules. can you update the driver? ![image](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/8/8ce1c10ed0810bc42753e9b0e1058fec3ca0902c.png) You need to use 7zip to unzip the Driver 5087 ---
**Author:** ![Rma](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@Rma](https://forum.sierrawireless.com/u/Rma)\ **Post date:** [September 19, 2023, 9:05am UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/17 "2023-09-19T09:05:35Z")
Thanks for the Information. After Clicking Update Driver, it shows or says the best driver for your device are already installed. ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [September 19, 2023, 9:06am UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/18 "2023-09-19T09:06:21Z")
then why it still show like this? > [@EM7455 Flash](https://forum.sierrawireless.com/t/em7455-flash/30634/8): > > Hello, now this one show up in the Device Manager, but it seems not correct. Did i something wrong? I installed the Driver 5087 with the Configuration and tried both ways USB COMP 8 and 99 ---
**Author:** ![Rma](https://avatars.discourse-cdn.com/v4/letter/r/7bcc69/32.png) [@Rma](https://forum.sierrawireless.com/u/Rma)\ **Post date:** [September 19, 2023, 12:09pm UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/19 "2023-09-19T12:09:31Z")
I have no idea, this is my setup right now. I will buy some other Adapte or the Dev Kit. Maybe then it will work, or do you have something else in mind what i can try. 😮 ![1695114436570](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/4/4b8c4bbfbe27fad862d7a1ae936d251419d51a55.jpeg) ![1695114436575](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/1/1ef07a81f09ae654fd7276e7d0a6e0c3e7fee5a0.jpeg) ---
**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\ **Post date:** [September 19, 2023, 1:10pm UTC](https://forum.sierrawireless.com/t/em7455-flash/30634/20 "2023-09-19T13:10:20Z")
I suggest you to ask a linux engineer to try in linux pc [Next page](https://forum.sierrawireless.com/t/em7455-flash/30634.md?page=2)