---
title: "W7500S2E-R1 firmware v. 2.8 issues with initialization and DHCP"
url: "https://maker.wiznet.io/forum/14433"
markdown_url: "https://maker.wiznet.io/forum/14433/md"
type: "Forum topic"
category: "Serial-to-Ethernet & ConfigTool"
author: "FMLab"
created: "2022-01-01T09:03:24+09:00"
last_activity: "2022-09-07T01:27:44+09:00"
language: "en"
views: 426
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# W7500S2E-R1 firmware v. 2.8 issues with initialization and DHCP

## Question

Asked by FMLab on 2022-01-01 in Serial-to-Ethernet & ConfigTool.

Hello, I want to report following errors in firmware version 2.8 which did not occur in previous versions (2.2, 2.3, 2.4).

Both these errors seem to occur only if DHCP was enabled.

After applying the DEFAULT signal, there’s an unexpected delay of about 0.8 seconds before the device replies the ‘Defalts set’ message and starts to accept AT commands.

Then, if DHCP enable command (AT+IP_MODE=1) is present in the command batch, the device stucks for about 6 seconds before the rest of the commands are processed. Furthermore, these commands are processed in unexpected 50 ms intervals.

## Replies

### Reply 1 by lokman402, 2022-09-07

[@FMLab](https://maker.wiznet.io/u/fmlab),

I’m Ron from WIZnet HK.

Thank you for your information about this issue.

We had modified our firmware and the delay has been reduce.

Please find the attached firmware.

Best Regards,
Ron
[W7500S2E_App_R1(DHCP fixed).bin](https://maker.wiznet.io/forum/legacyFile.asp?path=tCpQRFf0Cs1PvohSauicZzQEqCP.bin) (69.9 KB)

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Source: https://maker.wiznet.io/forum/14433