# Problem updating emonTx plus ESP 8266 Huzzah Module

**URL:** <https://community.openenergymonitor.org/t/problem-updating-emontx-plus-esp-8266-huzzah-module/2655>\
**Category:** Getting Started\
**Created:** [2 January 2017 09:13 UTC](https://community.openenergymonitor.org/t/problem-updating-emontx-plus-esp-8266-huzzah-module/2655 "2017-01-02T09:13:59Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![johnbanks](https://community.openenergymonitor.org/letter_avatar_proxy/v4/letter/j/c6cbf5/32.png) [@johnbanks](https://community.openenergymonitor.org/u/johnbanks)\
**Post date:** [2 January 2017 09:13 UTC](https://community.openenergymonitor.org/t/problem-updating-emontx-plus-esp-8266-huzzah-module/2655/1 "2017-01-02T09:13:59Z")

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In my test rig, I have an emonTx with ESP module successfully transmitting to an emonBase.  
I brought a second emonTx into play and had problems so I re-flashed it with emonTxV3\_4\_DiscreteSampling (10 Dec) then with emontx3\_emonesp (13 Nov). It did not work so I re-flashed it in reverse sequence. This time it worked…  
Is this the expected behaviour and if so why?  
Have I screwed up this emonTx and, if so, how to recover?  
I use PlatformIO and Windows.