# TXUltimate T5-3C-86 copy flash from another one - device work but can not add to ewelink

**URL:** <https://forum.ewelink.cc/t/txultimate-t5-3c-86-copy-flash-from-another-one-device-work-but-can-not-add-to-ewelink/28779>\
**Category:** Free discussion\
**Created:** [February 23, 2024, 4:56pm UTC](https://forum.ewelink.cc/t/txultimate-t5-3c-86-copy-flash-from-another-one-device-work-but-can-not-add-to-ewelink/28779 "2024-02-23T16:56:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rchristescu](https://avatars.discourse-cdn.com/v4/letter/r/779978/32.png) [@rchristescu](https://forum.ewelink.cc/u/rchristescu)\
**Post date:** [February 23, 2024, 4:56pm UTC](https://forum.ewelink.cc/t/txultimate-t5-3c-86-copy-flash-from-another-one-device-work-but-can-not-add-to-ewelink/28779/1 "2024-02-23T16:56:00Z")

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I have bricked one of my two T5-3C-86 by flashing a custom firmware.  
I tried to recover it by reading the flash from the good one and writing on the bricked one, using esptool.  
It works fine, but when I put it in pairing mode and try to add it to ewelink, it find it immediately but fail to add.  
I think that ewelink see somehow that the flash is from another device.  
Any idea how can I fix this in order to add it to ewelink?

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**Author:** ![HeisenBerg](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.ewelink.cc/heisenberg/32/494_2.png) [@HeisenBerg](https://forum.ewelink.cc/u/HeisenBerg)\
**Post date:** [March 4, 2024, 10:12am UTC](https://forum.ewelink.cc/t/txultimate-t5-3c-86-copy-flash-from-another-one-device-work-but-can-not-add-to-ewelink/28779/2 "2024-03-04T10:12:02Z")

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I think eWeLink can’t and wouldn’t answer this topic, nor the SONOFF guys.  
From my view, it’s better to ask the ESP community.