# Fast catchup does not work on Raspberry Pi 4B

**URL:** <https://forum.algorand.co/t/fast-catchup-does-not-work-on-raspberry-pi-4b/2330>\
**Category:** General\
**Tags:** mainnet\
**Created:** [December 24, 2020, 4:24pm UTC](https://forum.algorand.co/t/fast-catchup-does-not-work-on-raspberry-pi-4b/2330 "2020-12-24T16:24:16Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![salvatorecorvaglia](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.algorand.co/salvatorecorvaglia/32/754_2.png) [@salvatorecorvaglia](https://forum.algorand.co/u/salvatorecorvaglia)\
**Post date:** [December 26, 2020, 9:59am UTC](https://forum.algorand.co/t/fast-catchup-does-not-work-on-raspberry-pi-4b/2330/8 "2020-12-26T09:59:15Z")

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I tried “fast catchup” on testnet always with the same device and without changing the .json and it works perfectly and also very fast:

pi@raspberrypi:~/node $ ./goal node status -d testnetdata/ -w 1000  
Last committed block: 429  
Sync Time: 694.8s  
Catchpoint: 11320000#5HSFH424JSO7FSQCHDOF4SL7WACEMEZ6JGJ7VKDFVC4SYXA4PQIA  
Catchpoint total accounts: 266145  
Catchpoint accounts processed: 266145  
Catchpoint accounts verified: 266145  
Catchpoint total blocks: 1000  
Catchpoint downloaded blocks: 1000  
Genesis ID: testnet-v1.0  
Genesis hash: SGO1GKSzyE7IEPItTxCByw9x8FmnrCDexi9/cOUJOiI=

So the problem is on the mainnet … I try to change the CatchupBlockDownloadRetryAttempts on the mainnet to 20000 and let’s see what happens.

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