RP3 x IC880a gateway stopped working

[bluejedi]

How can microSD flash memory wear be minimized?

One of the Raspberry Pi’s weaknesses is its microSD flash card that serves as its main storage. The lifetime of Flash cards is limited by the maximum number of writes per memory cell. A flash card has an on-card memory controller that performs wear leveling management. This tries to spread write actions over all memory cells - through time - evenly, to prevent premature partial wear out. The wear levelling unfortunately does not completely prevent microSD cards in Raspberry Pi’s (and similar …