Mercedes-EQ and ROKiT Venturi Racing were prevented from taking part in qualifying whilst an investigation into the cause of Edo Mortara's Free Practice 3 crash was completed.
The Venturi driver went straight on at Turn 1 and into the barriers, towards the end of FP3. The impact was heavy, but Mortara remained conscious throughout and has subsequently been given the all-clear to take part in the rest of the race meeting.
The investigation into the cause of the accident has been completed to the satisfaction of the FIA, and all Mercedes-powered cars are able to take part in Round 2.
Mercedes-EQ said in a statement: "First and most importantly, we are pleased that Edo is safe and well following his accident in FP3.
"Our analysis since then has enabled us to understand what occurred and put in place suitable countermeasures.
"The braking system on Formula E cars is designed so that if the front brakes fail, the rear brake system is activated as a fail-safe.
"In this instance, an incorrect software parameter that meant the rear brake system didn't activate as intended and the fail-safe did not kick in.
"We have now corrected the software problem and demonstrated to the FIA’s satisfaction that the matter has been resolved.
"As a result, the FIA will permit all Mercedes-powered cars to race this evening."