Pumpkin CN27 -- How to upgrade the MCU for CN27 series car stereos

This MCU upgrade only fits for CN27 series car stereos. CN27 series car stereo sku: AA0485B，AA0484B，AA0405B，AA0452H，AA0451B，AA0436B MCU download link: mega.nz/#F!fKYHzSSQ!lldrq_lSFgUps1dqrXUpBw Upgrade steps: Copy the dmcu.img file to the root directory of the U disk, insert the USB port and click the setting--system---mcu upgrade Upgraded MCU version: MTCE_HT_V3.30_1 US Site: www.autopumpkin.com/ UK Site: www.autopumpkin.co.uk/ DE Site: www.autopumpkin.de/

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• #car_stereo
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• #mcu_upgrade_android_car_stero