This community is for professionals and enthusiasts of our products and services. Share and discuss the best content and new marketing ideas, build your professional profile and become a better marketer together.


Dead Jelly Pro after Flashing

Luigi Camporesi
on 2/9/19, 12:12 PM 2,600 views

I've flashed 2018092612_c223v37m_dfl_pro with SP_MDT_exe_v3.1812.00.00-A2018.08.30-v1.5-unihertz obtaining the error message DL Error and a dead Jelly Pro. It is connecting but does not get flashing anymore. f<ollowing procedure as in the flashing manual does not work. Any suggestions?

On 6/27/20, 8:39 PM

K. Hind: Hope you can downgrade to 7.  I luckily never updated past Android 7 because in Android 8, Google deleted the "Background Task Clear" option. That let me automatically turn off 50+ apps that were running in the background. I only have 6 running now when I turn the phone on. With light-medium texting and limited calls, I can get up to 2 days of battery life. On standby (hardly using it at all), 4 days. Google should not have taken control over people's app usage.

PS. No WiFi running-- that would kill it.

K. Hind
On 2/27/19, 3:56 PM

Did you solve the Problem. I wanted to downgrade to Android 7 but nothing happens after flashing 

  • Flag

i'm in the same situation.. so let me know if you got somthing...

itschak elcharar
on 2/28/19, 4:46 PM


Customer Service

--Customer Service--
| 4 1 4
123, Japan
--Customer Service--

Customer Service
On 2/12/19, 1:55 AM


For this problem, pls contact service@unihertz.com

Soon there will be one of our professional colleague to help you.

Your Answer

Please try to give a substantial answer. If you wanted to comment on the question or answer, just use the commenting tool. Please remember that you can always revise your answers - no need to answer the same question twice. Also, please don't forget to vote - it really helps to select the best questions and answers!