pump broke

Hi.i'm a pump user in China. I bought a second hand 770g from USA. First, it often lose power suddenly. I checked battery cap and it is no problem. is there any way to fix it? Second, i want to upgrade it to 780g，but Medtronic tells me i must have a mrn number to register a diabetes.shop...

hi there every one i was hoping that some of you could help me with this predictment i find myself in. My pump has just broke so while i wait for a new one i have had to go back on tresiba and novorapid needles again but i tend to get bad results from these rather than my pump which has my...