Zyxel_James  Zyxel Employee

@madi792 What's the current version of both partitions? and please note that backup the configuration before upgrading About upgrade fail problem, please refer to this article, thanks

@ITRIJNAMS Do you have physical access to the device? You can access the device via ssh login and input set firmware boot number 1. Afterward, you can proceed to upgrade to ZLD 5.36 Patch 2 Firmware. Please note the current partition could be number 1 already. If so, please input set firmware boot number 2 instead, thanks

@PedroObrero Please follow the steps in this article, thanks.

For Cloud Firmware upgrade, go to Maintenance > File Manager> Firmware Management, and click on the Cloud download symbol For local upgrade, please download the firmware file on portal.myzyxel.com, go to the same page, click on the local file button then upload the .bin file, thanks. Please note that archive the file and…

@tsi We have released ZLD5.36 Patch 2 firmware. This update primarily focuses on addressing vulnerabilities and resolving issues related to VPN connections including network interruptions. Please upgrade to 5.36P2 and check if the symptom still exists, thanks. BTW, please backup the configure before upgrading

@baba I suggest opening a new one since it's not the same subject as this thread, thanks.

@Nathanoum What's your PC windows version? and I would like to check SecuExtender log Please collect the secuExtender log on the Windows PC C:\SecuExtenderHelper.log C:\Users[windows account]\SecuExtender.log Moreover, you may check if the service SecuExtender Helper is running when the issue happens, thanks You can also…

@Alanl Since you mentioned that your Windows11 cannot stay connected with SSL VPN, do you mean that the SSL tunnel can be established but dropped within secs or mins? Or cannot establish the tunnel? Please collect the secuExtender log on the Windows11 PC C:\SecuExtenderHelper.log C:\Users[windows account]\SecuExtender.log…

@electsystech I would like to follow up your case, I've contact you through private message, please check your inbox, thanks

@YuryDXB yes, it could be. So I suggest you upgrade the firmware by the method of Firmware Recovery BTW, please backup the configuration before upgrading.

@zpe I suggest you reboot the device first and try again. Please upgrade to v5.36Patch2 which fixes vulnerabilities and VPN connection issues. If the upgrade fails, please refer to this article.

@Akran Go to Configure > Firmware Management > Firewall, select Upgrade Now as the Upgrade policy, and click Save. @ZdenekB The upload file 473AAAAxxxxx.bin is for ZyWall 110. For ZyWall 1100, you can find the filename is 473AAACxxxxx.bin

@MarekSK EOL devices (3.30) are not affected. @Boiler1976 yes, please upgrade to 4.73Patch which we already provide the downlink in this article. @alexey This thread is referring to the urgent buffer issue, we will work on your case in your article thread.

Hello @baba I just unlock the upgrade feature, you may upgrade to the latest version now, thank you.

@YuryDXB since the firmware version of standby partition is too old. I suggest you boot up with standby partition and upgrade the firmware by the method of "Firmware Recovery"